What is the primary energy source for life on earth ?

What is the primary energy source for life on earth ?
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The primary energy source for life on earth is the sun. The sun plays the important role of keeping the planet warmed and it is the source of the luminous energy used in photosynthesis. This energy is converted into organic material by the photosynthetic autotrophic beings and consumed by the other living beings. Image Diversity: the sun   
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What is your opinion of wind farms as a green energy source?

Description : What is your opinion of wind farms as a green energy source?

Last Answer : answer:While there are greener' sources of energy, I don't think there's such a thing as green' energy. The Second Law of Thermodynamics guarantees that any energy used to provide work will produce ... reduced population. I think far afield of your original question but it was fun doing so! ;)

What is the difference between primary ecological succession and secondary ecological succession ?

Description : What is the difference between primary ecological succession and secondary ecological succession ?

Last Answer : Primary ecological succession is the changing sequence of communities from the first biological occupation of a place where previously there were no living beings. For example, the colonization and the following ... from the invasion of plants and animals are in an abandoned crop or land.

What is the formula of the net primary production ?

Description : What is the formula of the net primary production ?

Last Answer : NPP)? How does NPP relate to the energy pyramids? Net primary production is the gross primary productivity less the organic material consumed as energy source in the metabolism of the producers: NPP = GPP ... these pyramids is to show the available energy in each trophic level of the food chain.

What are the factors that for influencing photosynthesis also interfere with the gross primary productivity ?

Description : What are the factors that for influencing photosynthesis also interfere with the gross primary productivity ?

Last Answer : Mainly water and light, but also mineral salts, temperature, and carbon dioxide are factors that interfere with the gross primary productivity.

What is the gross primary production of an ecosystem ?

Description : What is the gross primary production of an ecosystem ?

Last Answer : How does GPP relate to photosynthesis? Gross primary production of an ecosystem, or GPP, is the quantity of organic material found in a given area in a given period. Since only autotrophs ... material and photosynthesis is the main production process, GPP is a result of the photosynthesis.

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Description : What are primary consumers ?

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Which is the autotrophic group responsible for the production of most part of the molecular oxygen of earth ?

Description : Which is the autotrophic group responsible for the production of most part of the molecular oxygen of earth ?

Last Answer : Algae and cyanobacteria of the phytoplankton are the organisms that contribute most for the production of molecular oxygen. Image Diversity: phytoplankton

Can the amount of available energy in a given tropic level to be larger than the available energy in inferior tropic levels ?

Description : Can the amount of available energy in a given tropic level to be larger than the available energy in inferior tropic levels ?

Last Answer : What does that condition means to the conformation of the energy pyramids? A superior tropic level always has less available energy than inferior tropic levels. This is because in each tropic level only a ... energy pyramid, from the base to the top, the size of the variable dimension decreases.

Into which type of energy is the light used in photosynthesis transformed ?

Description : Into which type of energy is the light used in photosynthesis transformed ?

Last Answer : The luminous energy used in photosynthesis is transformed into chemical energy.

What do energy pyramids represent ?

Description : What do energy pyramids represent ?

Last Answer : Energy pyramids represent the amount of available energy in each tropic level of the food chain. Image Diversity: energy pyramids

How is energy transferred along a food chain ?

Description : How is energy transferred along a food chain ?

Last Answer : The energy flux along a food chain is always unidirectional, from the producers to the decomposers.

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Description : What is the main means by which autotrophic beings obtain energy ?

Last Answer : The main means by which autotrophs obtain energy is photosynthesis. (There are also chemosynthetic autotrophs.) Image Diversity: photosynthesis

What are the strengths and weaknesses of an ecological perspective in understanding life?

Description : What are the strengths and weaknesses of an ecological perspective in understanding life? 

Last Answer : The great strength of ecology is that it deals with living things in terms of their natural surroundings rather than in artificial isolation. Other branches of biology focus upon particular aspects of ... has been achieved, particularly where clear boundaries to a habitat exist, such as on islands 

Do you think that pandemic restrictions have left us estranged us from the environment, or made us appreciate nature more deeply?

Description : Do you think that pandemic restrictions have left us estranged us from the environment, or made us appreciate nature more deeply?

Last Answer : Weed the garden already!

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Do some people make themselves a slave to trying to reduce their Carbon Footprint?

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Last Answer : answer:Some people do. But that is their choice. I try to cut down on electricity since what I previously thought was untrue. Turns out 30% of our electricity comes from coal. I thought it was pretty ... has three kids and I will turn off the light-bulb if that means they can breathe cleaner air.

[SFW] How do we limit births to avoid disaster due to resource depletion, pollution and destruction of nature?

Description : [SFW] How do we limit births to avoid disaster due to resource depletion, pollution and destruction of nature?

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Does the natural world around us sound healthy to you?

Description : Does the natural world around us sound healthy to you?

Last Answer : I think this guy's blog post says pretty much what I'd be saying if I couldn't make it a handy link. In short, each generation seems to accept as normal the state of the world at the ... decline. And even more so, for the people being born now who will accept the present state as baseline normal.

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What affect would a 1 year, 5 year, 10 year moratorium on human procreation have on the planet?

Description : What affect would a 1 year, 5 year, 10 year moratorium on human procreation have on the planet?

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Who is the author who calls “W²٣” (i.e. WWIII) “the war on poverty”?

Description : Who is the author who calls “W²٣” (i.e. WWIII) “the war on poverty”?

Last Answer : Is this it?

What do you think to introducing Lions to the plains of the western United States in order to control the wild horse population?

Description : What do you think to introducing Lions to the plains of the western United States in order to control the wild horse population?

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Are my examples of obligate and facultative mutualism right?

Description : Are my examples of obligate and facultative mutualism right?

Last Answer : a good one as well?

What are some examples of migratory animals ?

Description : What are some examples of migratory animals ?

Last Answer : Examples of migratory animals are: southern right whales from Antarctica, that procreate in the Brazilian coast; migratory salmons that are born in the river, go to the sea and return to ... that spend the winter in tropical regions; etc. Population Ecology - Image Diversity: migratory animals

What are the main factors that affect the growth of a population ?

Description : What are the main factors that affect the growth of a population ?

Last Answer : The main factors that make populations grow are births and immigration. The main factors that make populations decrease are deaths and emigration.

How different are the concepts of migration ?

Description : How different are the concepts of migration ?

Last Answer : emigration, and immigration Migration is the moving of individuals of a species from one place to other. Emigration is the migration seen as exit of individuals from one region (to other where ... individuals coming from other region. Therefore, individuals emigrate "from" and immigrate "to".

What is population growth rate ?

Description : What is population growth rate ?

Last Answer : Population growth rate (PGR) is the percent variation between the numbers of individuals in a population in two different times. Therefore, the population growth rate can be positive or negative.

What is population density ?

Description : What is population density ?

Last Answer : Population density is the relation between the number of individuals of a population and the area or volume they occupy. For example, in 2001 the human population density of the United States ( ... square kilometer and China had a population density of 135,41 humans per square kilometer.

What is a population ?

Description : What is a population ?

Last Answer : In Biology population is a set of individuals of the same species living in a given place and in a given time. Population Ecology - Image Diversity: world human population

How do biodiversity ?

Description : How do biodiversity ?

Last Answer : the total number of living beings, and the biomass respectively vary during the ecological succession? Biodiversity, the number of living beings, and the biomass of an ecosystem tend to increase as ... production by cellular respiration and the fixation of carbon into the biomass tends to zero.

What is the climax stage of an ecological succession ?

Description : What is the climax stage of an ecological succession ?

Last Answer : The climax stage is the stage of the ecological succession in which the community of an ecosystem becomes stable and does not undergo significant changes. In the climax community practically all ecological ... of the phytoplankton are the main producers of the molecular oxygen of the planet.)

What are pioneer species ?

Description : What are pioneer species ?

Last Answer : What is the role of the pioneer species? Pioneer species are those first species that colonize places where previously there were no living beings, like, for example, algae that colonize bare rocks. ... other species to establish in the place by the creation of new potential ecological niches.

What is ecological succession ?

Description : What is ecological succession ?

Last Answer : Ecological succession is the changing sequence of communities that live in a ecosystem during a given time period. Image Diversity: ecological succession

What is ammensalim ?

Description : What is ammensalim ?

Last Answer : Ammensalism is the ecological interaction in which an individual harms other without obtaining benefit. Ammensalism is an inharmonious (negative) ecological interaction since one participant is harmed. (Sometimes it ... of algae that by intoxication can lead to death of fishes and other animals.

Is herbivorism a form of predatism ?

Description : Is herbivorism a form of predatism ?

Last Answer : Herbivorism is the form of predatism in which first order consumers feed from producers (plants or algae). For example, birds and fruits, humans and eatable vegetable, etc. (There are proposals to ... a form of parasitism and the herbivorism of entire plants and seeds a form of predatism).

What is predatism ?

Description : What is predatism ?

Last Answer : Predatism is the ecological interaction in which one individual mutilates or kills other to get food. Predatism is an inharmonious (negative) ecological interaction since one participant is harmed. Symbiosis and Other Interactions - Image Diversity: predatism

What are some examples of parasitism ?

Description : What are some examples of parasitism ?

Last Answer : Classical examples are the parasites of humans (host), like the trypanosome that causes Chagas' disease, the HIV virus (AIDS), the bacteria that causes tuberculosis, the schistosome that causes schistosomiasis, the ... dog (host) and lice (parasite), cattle (host) and tick (parasite), etc.

What is parasitism ?

Description : What is parasitism ?

Last Answer : Parasitism is the ecological interaction in which a being lives at the expense of other. The parasite often does not cause immediate death of the host since it needs the host alive to ... one participant benefit the other is harmed. Symbiosis and Other Interactions - Image Diversity: parasitism

What are some examples of interspecif competition ?

Description : What are some examples of interspecif competition ?

Last Answer : Examples of interspecific competition are the dispute among vultures, worms, flies, and microorganisms for carrions and the competition between snakes and eagles for rodents. Symbiosis and Other Interactions - Image Diversity: interspecific competition

What benefits can commensalism offer to a species ?

Description : What benefits can commensalism offer to a species ?

Last Answer : Commensalism may involve obtention of food (for example, the innocuous bacteria of the human guts), shelter or support (epiphytes on trees) and transportation (pollen carried by insects or birds). The commensalism that involves obtention of shelter is also called inquilinism.

What is commensalism ?

Description : What is commensalism ?

Last Answer : Commensalism is the ecological interaction in which one individual benefit while the other is not benefited neither harmed. Commensalism is a harmonious (positive) ecological interaction, since ... in commensalism with humans. Symbiosis and Other Interactions - Image Diversity: commensalism

What is mutualism ?

Description : What is mutualism ?

Last Answer : Mutualism is the ecological interaction in which both participants benefit and that is obligatory for their survival. Mutualism is a harmonious (positive) ecological interaction. Mutualism is also ... offer nitrogen to these plants. Symbiosis and Other Interactions - Image Diversity: mutualism

What is protocooperation ?

Description : What is protocooperation ?

Last Answer : Protocooperation is the ecological interaction in which both participants benefit and that is not obligatory for their survival. Protocooperation is a harmonious (positive) interspecific ecological ... to obtain food). Symbiosis and Other Interactions - Image Diversity: protocooperation

What are the main interspecific ecological interactions ?

Description : What are the main interspecific ecological interactions ?

Last Answer : The main harmonious interspecific ecological interactions are protocooperation, mutualism and commensalism. The main inharmonious interspecific ecological interactions are interspecific competition, parasitism, predatism and ammensalism.

Why is cannibalism an inharmonious intraspecific ecological interaction ?

Description : Why is cannibalism an inharmonious intraspecific ecological interaction ?

Last Answer : In cannibalism an individual eat other of the same species (occurs in some insects and arachnids). Since it is an interaction between beings of the same species and at least ... intraspecific ecological interaction is justified. Symbiosis and Other Interactions - Image Diversity: cannibalism

What is an example of intraspecific competition ?

Description : What is an example of intraspecific competition ?

Last Answer : Intraspecific competition practically occurs in all species, for example, the competition of humans for a job.

What is competition ?

Description : What is competition ?

Last Answer : Which type of ecological interaction is competition? Competition is the ecological interaction in which the individuals explore the same ecological niche or their ecological niches partially ... ecological interaction. Symbiosis and Other Interactions - Image Diversity: intraspecific competition