The amount of oxygen in the atmosphere remains relatively constant because it is given off by - (1) Oceans (2) Animals (3) Rocks (4) Plants

The amount of oxygen in the atmosphere remains relatively constant because it is given off by - (1) Oceans (2) Animals (3) Rocks (4) Plants
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(4) Plants Explanation: Just as water moves from the sky to the earth and back in the hydrologic cycle, oxygen is also cycled through the environment. Plants mark the beginning of the oxygen cycle. They use the energy of sunlight to convert carbon dioxide and water into carbohydrates and oxygen in a process called photosynthesis.
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The amount of oxygen in the atmosphere remains relatively constant because it is given off by (1) Oceans (2) Animals (3) Rocks (4) Plants

Description : The amount of oxygen in the atmosphere remains relatively constant because it is given off by (1) Oceans (2) Animals (3) Rocks (4) Plants

Last Answer : Plants

Biosphere refers to – (1) the area of the land inhabited by living organism (2) the part of ocean inhabited by plants and animals (3) the portion of the earth, including the oceans, the land, the soil and the atmosphere inhabited by living organisms (4) the atmosphere surrounding the living organisms

Description : Biosphere refers to - (1) the area of the land inhabited by living organism (2) the part of ocean inhabited by plants and animals (3) the portion of the earth, including the oceans ... land, the soil and the atmosphere inhabited by living organisms (4) the atmosphere surrounding the living organisms

Last Answer : (3) the portion of the earth, including the oceans, the land, the soil and the atmosphere inhabited by living organisms Explanation: The biosphere is the global ecological system integrating all living beings ... up of the parts of Earth where life exists. It is the worldwide sum of all ecosystems.

Biosphere refers to (1) the area of the land inhabited by living organism (2) the part of ocean inhabited by plants and animals (3) the portion of the earth, including the oceans, the land, the soil and the atmosphere inhabited by living organisms (4) the atmosphere surrounding the living organisms

Description : Biosphere refers to (1) the area of the land inhabited by living organism (2) the part of ocean inhabited by plants and animals (3) the portion of the earth, including the oceans, the land, the soil and the atmosphere inhabited by living organisms (4) the atmosphere surrounding the living organisms

Last Answer : the portion of the earth, including the oceans, the land, the soil and the atmosphere inhabited by living organisms

Pick up the correct statement from the following: (A) Rivers, lakes, oceans and springs get water from the rains (B) Rain water is obtained by evaporation from rivers, lakes and oceans (C) Water remains in atmosphere as vapours(D) All the above

Description : Pick up the correct statement from the following: (A) Rivers, lakes, oceans and springs get water from the rains (B) Rain water is obtained by evaporation from rivers, lakes and oceans (C) Water remains in atmosphere as vapours (D) All the above

Last Answer : Answer: Option D

Life originated first in the primitive oceans. The evidences supporting this view a. Protoplasm and body fluids of all animals contain salt b. Moist simpler and lower animals are aquatic and marine c. Fossils of earliest animals obtained from rocks of marine origin d. All the above

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Last Answer : d. All the above

In a constant level tube, size of the bubble remains constant because upper wall is (A) Of relatively larger radius (B) Of relatively smaller radius (C) Flat (D) Convex downwards

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Last Answer : (A) Of relatively larger radius

Air over the oceans is colder in summer and warmer in winter compared with air over the continental regions. This is because (a) Water is translucent and has a relatively high heat capacity compared to dirt (b) Compared to dirt, a thicker layer of water participates in the seasonal cycle (c) The albedo of water is greater than that of land and thus reflects more solar radiation (d) Both A and B are true (e) The effect is due to the changes in circulation between continents and oceans

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The greatest reservoir of carbon dioxide is: w) the atmosphere x) plants y) the soil z) the oceans

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Which of the following is correct about cold blooded animals? (1) Their blood remains cold all the time (2) Their body temperature changes in accordance with the atmosphere (3) Their body temperature remains constant all the time (4) They kill all the animals they come across (SSC Combined Graduate Level Prelim Exam.

Description : Which of the following is correct about cold blooded animals? (1) Their blood remains cold all the time (2) Their body temperature changes in accordance with the atmosphere (3) Their body temperature ... time (4) They kill all the animals they come across (SSC Combined Graduate Level Prelim Exam.

Last Answer : (2) Their body temperature changes in accordance with the atmosphere Explanation: A cold blooded animal, or ectotherm, is one that does not have an internal mechanism for regulating its body ... of cold blooded animals. -For any Study materialContact WhatsApp: 8337932441 Join Telegram- Click here

Which of the following is correct about cold blooded animals ? (1) Their blood remains cold all the time (2) Their body temperature changes in accordance with the atmosphere (3) Their body temperature remains constant all the time (4) They kill all the animals they come across

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Last Answer : Their body temperature changes in accordance with the atmosphere

What term describes a material whose resistance remains relatively constant with changes in temperature?

Description : What term describes a material whose resistance remains relatively constant with changes in temperature?

Last Answer : Zero temperature coefficient.

For a heterogeneous catalytic reaction (A) Free energy of activation is lowered in the presence of catalyst, which remains unchanged at the end of reaction (B) A relatively small amount of catalyst can cause the conversion of large amount of reactants which does not mean that catalyst concentration is important (C) The catalyst does not form an intermediate complex with the reactant (D) The surface of the catalyst does not play an important role during reaction

Description : For a heterogeneous catalytic reaction (A) Free energy of activation is lowered in the presence of catalyst, which remains unchanged at the end of reaction (B) A relatively small amount of catalyst ... with the reactant (D) The surface of the catalyst does not play an important role during reaction

Last Answer : (A) Free energy of activation is lowered in the presence of catalyst, which remains unchanged at the end of reaction

Which of the following is not a practical method of low level radioactive waste disposal? (A) Dilution with inert material (B) Discharging to atmosphere through tall stacks after dilution (C) Disposing off in rivers & oceans (D) Filling in steel crates and shooting it off out of earth's gravity

Description : Which of the following is not a practical method of low level radioactive waste disposal? (A) Dilution with inert material (B) Discharging to atmosphere through tall stacks after dilution (C) Disposing off in rivers & oceans (D) Filling in steel crates and shooting it off out of earth's gravity

Last Answer : (D) Filling in steel crates and shooting it off out of earth's gravity

What would happen to animals if the amount of oxygen the earths atmosphere decreased?

Description : What would happen to animals if the amount of oxygen the earths atmosphere decreased?

Last Answer : youll die

What would happen to animals if the amount of oxygen the earths atmosphere decreased?

Description : What would happen to animals if the amount of oxygen the earths atmosphere decreased?

Last Answer : youll die

Hydrogen is not found in atmosphere because – (1) it is highly inflammable (2) it is the lightest gas (3) it is absorbed by plants (4) it immediately combines with oxygen to form water

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Last Answer : (2) it is the lightest gas Explanation: Hydrogen is a chemical element with symbol H and atomic number 1. With an average atomic weight of 1.00794 u (1.007825 u for hydrogen-1), hydrogen ... hydrogen in its plasma state. Air is the name given to the atmosphere used in breathing and photosynthesis.

Hydrogen is not found in atmosphere because (1) it is highly inflammable (2) it is the lightest gas (3) it is absorbed by plants (4) it immediately combines with oxygen to form water

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Last Answer :  it is the lightest gas

I roam the empty oceans pounding up over rocks, I make streams pour down peoples faces but some people like to ride me. What am I? -Riddles

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Last Answer : Waves.

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Which of the following is the best example of law of conservation of mass? [NCERT 1975] (A) 12 g of carbon combines with 32 g of oxygen to form 44 g of CO2. (B) When 12 g of carbon is heated in a vacuum there is no change in mass. (C) A sample of air increases in volume when heated at constant pressure but its mass remains unaltered. (D) The weight of a piece of platinum is the same before and after heating in air.

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Last Answer : (A) 12 g of carbon combines with 32 g of oxygen to form 44 g of CO2.

The volume of a given amount of water _________ as the temperature decreases from 4˚C to 0˚C.  a. decreases  b. increases  c. remains constant  d. none of the above

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Are reservoirs that chemical elements can move through as part of the Earth's biogeochemical cycle I.the solid Earth II.Earth's oceans III.Earth's atmosphere IV.organisms on Earth?

Description : Are reservoirs that chemical elements can move through as part of the Earth's biogeochemical cycle I.the solid Earth II.Earth's oceans III.Earth's atmosphere IV.organisms on Earth?

Last Answer : Need answer

How is energy transferred within the earth and atmosphere and throughout the oceans?

Description : How is energy transferred within the earth and atmosphere and throughout the oceans?

Last Answer : By convection

Oceans act as sinks for atmospheric gases including carbon dioxide whose concentration in the atmosphere is increased by the (A) Forestation (B) Rain (C) Green house effect (D) Vegetation

Description : Oceans act as sinks for atmospheric gases including carbon dioxide whose concentration in the atmosphere is increased by the (A) Forestation (B) Rain (C) Green house effect (D) Vegetation

Last Answer : (C) Green house effect

The rocks which are formed due to cooling of magma at a relatively shallow depth from the earth's surface are called (A) Plutonic rocks (B) Hypabyssal rocks (C) Volcanic rocks (D) Igneous rocks

Description : The rocks which are formed due to cooling of magma at a relatively shallow depth from the earth's surface are called (A) Plutonic rocks (B) Hypabyssal rocks (C) Volcanic rocks (D) Igneous rocks

Last Answer : Answer: Option B

Which of the following statements about delivery-dependent oxygen consumption are true? A. Below the critical oxygen delivery (D(overdot)O 2crit), one would expect to see a decrease in the lactate-pyruvate ratio. B. D(overdot)O 2crit may be increased in patients with sepsis. C. A desirable goal in the treatment of shock is to achieve delivery-independent oxygen consumption. D. The oxygen extraction ratio remains constant as long as oxygen delivery remains above D(overdot)O 2crit.

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Last Answer : Ans:(c)

Water cycle refers to (1) an integrated attempt to recycle water in relatively arid regions (2) constant movement of water from ocean to land and back to ocean once again (3) scientific management of water in areas excessively plagued with water-logging (4) water distribution in relatively dry areas

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Last Answer :  constant movement of water from ocean to land and back to ocean once again

What is composed of weathered rocks and decomposed organic material from dead plants and animals?

Description : What is composed of weathered rocks and decomposed organic material from dead plants and animals?

Last Answer : Need answer

Under which method of depreciation the amount of depreciation remains constant every year?

Description : Under which method of depreciation the amount of depreciation remains constant every year?

Last Answer : Under which method of depreciation the amount of depreciation remains constant every year?

What is the pressure of the air, in atm, in the lungs when the gas expands to 175.0 mL at a body temperature of 37 ∘C, and the amount of gas remains constant?

Description : What is the pressure of the air, in atm, in the lungs when the gas expands to 175.0 mL at a body temperature of 37 ∘C, and the amount of gas remains constant?

Last Answer : I don’t understand the question

_____ is that property of a substance which remains constant if no heat enters or leaves the substance, while it does work or alters its volume, but which increases or diminishes should a small amount of heat enter or leave.  a. Entrophy  b. Enthalpy  c. Specific Heat  d. None of the above

Description : _____ is that property of a substance which remains constant if no heat enters or leaves the substance, while it does work or alters its volume, but which increases or diminishes should a small amount of heat enter or leave.  a. Entrophy  b. Enthalpy  c. Specific Heat  d. None of the above

Last Answer : Entrophy

The characteristic of non-linear pharmacokinetics include : (A) Area under the curve is proportional to the dose (B) Elimination half-life remains constant, (C) Area under the curve is not proportional to the dose (D) Amount of drug excreted through remains constant

Description : The characteristic of non-linear pharmacokinetics include : (A) Area under the curve is proportional to the dose (B) Elimination half-life remains constant, (C) Area under the curve is not proportional to the dose (D) Amount of drug excreted through remains constant

Last Answer : (C) Area under the curve is not proportional to the dose

Which layer of the atmosphere has relatively little effect on radio waves?

Description : Which layer of the atmosphere has relatively little effect on radio waves?

Last Answer : Stratosphere.

What is the amount of oxygen in the atmosphere? -General Knowledge

Description : What is the amount of oxygen in the atmosphere? -General Knowledge

Last Answer : answer:

What is the amount of oxygen in the atmosphere? -General Knowledge

Description : What is the amount of oxygen in the atmosphere? -General Knowledge

Last Answer : answer:

What would happen to the amount of oxygen in Earth and atmosphere if half the trees on Earth were cut down Why?

Description : What would happen to the amount of oxygen in Earth and atmosphere if half the trees on Earth were cut down Why?

Last Answer : Need answer

If there is no carbon dioxide in the earth's atmosphere, the temperature of earth's surface would be – (1) dependent on the amount of oxygen in the atmosphere (2) higher than the present (3) less than the present (4) the same

Description : If there is no carbon dioxide in the earth's atmosphere, the temperature of earth's surface would be – (1) dependent on the amount of oxygen in the atmosphere (2) higher than the present (3) less than the present (4) the same

Last Answer : (3) less than the present Explanation: If there is no carbon dioxide in the earth's atmosphere, the temperature of earth's surface would be less than the present because carbon emission in the atmosphere is one of the major causes of global warming.

If there is no carbon dioxide in the earth’s atmosphere, the temperature of earth’s surface would be (1) dependent on the amount of oxygen in the atmosphere (2) higher than the present (3) less than the present (4) the same

Description : If there is no carbon dioxide in the earth’s atmosphere, the temperature of earth’s surface would be (1) dependent on the amount of oxygen in the atmosphere (2) higher than the present (3) less than the present (4) the same 

Last Answer : less than the present

How long does it take for an average amount of broken iceberg in Greenland to raise sea levels in all oceans?

Description : How long does it take for an average amount of broken iceberg in Greenland to raise sea levels in all oceans?

Last Answer : If an iceberg floating in the ocean melts, water levels will go down infinitesimally. Water expands when it freezes, contracts when it melts.

Photosynthesis in `C_(4)` plants is relatively less limited by atmospheric `CO_(2)` levels because

Description : Photosynthesis in `C_(4)` plants is relatively less limited by atmospheric `CO_(2)` levels because

Last Answer : Photosynthesis in `C_(4)` plants is relatively less limited by atmospheric `CO_(2)` levels because A. ... 4)` plants has higher affinity for `CO_(2)`

Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because (a) effective pumping of CO2 into bundle sheath cells (b) RuBisCO in C4 plants has higher affinity for CO2 (c) four carbon acids are the primary initial CO2 fixation products (d) the primary fixation of CO2 is mediated via PEP carboxylase. (2005) 65. In sugarcane plant

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Last Answer : (d) the primary fixation of CO2 is mediated via PEP carboxylase.

Minerals in soil body come from a. Weathering of rocks b. Wind and water c. Rains d. Dead organic remains

Description : Minerals in soil body come from a. Weathering of rocks b. Wind and water c. Rains d. Dead organic remains

Last Answer : a. Weathering of rocks

The element present in the largest amount in rocks and minerals is - (1) carbon (2) silicon (3) hydrogen (4) aluminium

Description : The element present in the largest amount in rocks and minerals is - (1) carbon (2) silicon (3) hydrogen (4) aluminium

Last Answer : (2) silicon Explanation: Silicon is the eighth most common element in the universe by mass, but very rarely occurs as the pure free element in nature. It is most widely distributed in dusts, sands, planetoids, and planets as various forms of silicon dioxide (silica) or silicates.

(1) aluminium powder and ammonium nitrate Explanation: Ammonal is an explosive made up of ammonium nitrate and aluminium powder. The ammonium nitrate functions as an oxidizer and the aluminium as fuel. The use of the relatively cheap ammonium nitrate and aluminium makes it a replacement for pure TNT. The mixture is affected by humidity because ammonium nitrate is highly hygroscopic. Ammonal is not easily detonated, requiring a fairly substantial shock, though it is still more sensitive than trinitrotoluene and composition C4.

Description : (1) aluminium powder and ammonium nitrate Explanation: Ammonal is an explosive made up of ammonium nitrate and aluminium powder. The ammonium nitrate functions as an oxidizer and the aluminium ... a fairly substantial shock, though it is still more sensitive than trinitrotoluene and composition C4.

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In an actual transformer the iron loss remains practically constant from no load to full load because?

Description : In an actual transformer the iron loss remains practically constant from no load to full load because?

Last Answer : In an actual transformer the iron loss remains practically constant from no load to full load because core flux remains practically constant.

What term specifically describes small chunks of rocks and debris in space that burn up in Earth and atmosphere?

Description : What term specifically describes small chunks of rocks and debris in space that burn up in Earth and atmosphere?

Last Answer : What is the answer ?

Why do scientists look for water vapor ozone or oxygen in a plants atmosphere?

Description : Why do scientists look for water vapor ozone or oxygen in a plants atmosphere?

Last Answer : Because they are interested in whether water vapor, ozone oroxygen in a plants atmosphere are there.

Deep ponds, in which oxygen is absent except, perhaps, across a relatively thin surface layer, are called : (a) Aerobic ponds (b) Anaerobic ponds (c) Facultative ponds (d) Polishing ponds

Description : Deep ponds, in which oxygen is absent except, perhaps, across a relatively thin surface layer, are called : (a) Aerobic ponds (b) Anaerobic ponds (c) Facultative ponds (d) Polishing ponds

Last Answer : (b) Anaerobic ponds

Why is water not suitable for putting out a petrol fire? (1) The oxygen content of water is isolated by petrol and thus it helps in burning (2) Petrol is too inflammable to be extinguished by water (3) The heat required for combustion of petrol is very low (4) Water, being heavy, slips below petrol which thus remains in contact with air and burns

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Last Answer : (4) Water, being heavy, slips below petrol which thus remains in contact with air and burns Explanation: Water is not effective on petrol fire because it has higher density than ... while petrol stays afloat and keeps burning. Petrochemical fires are nearly always extinguished with chemical foam.