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Herbivores are the dominant species on Earth so plants are the major source of energy next to an Omnivores diet of meat and plants. The plant process is photosynthesis and that's where the energy for an ecosystem comes from.

To sum up, the sun is the source of energy for the majority of ecosystems as sunlight is required for photosynthesis.

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14y ago
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9y ago

The sun.

Without the sun life on earth would soon stop because all available carbon (the basis of all life forms on Earth) would be used up.

A few ecosystems get their energy partially or entirely from geothermal sources. The original source of this energy is radioactive decay heat from isotopes in the crust, mantle, and core.

Both the sun and earth were formed from matter ejected and/or compressed by supernova explosions. So the original source for both the energy from the sun and from radioactive decay heat was supernovas.

Ultimately the original source of all energy was the Big Bang.

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11y ago

The sun is the original source of energy. The sun provides energy to all of the planets, especially to solar powered objects.

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9y ago

The sun or solar energy is at the start of almost every energy chain.

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13y ago

the sun

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12y ago

the sun

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11y ago

Sunlight

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Q: Which is the primary source of energy in almost all ecosystems?
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Related questions

What is the ultimate source of energy for ecosystems?

The sun is the ultimate source of energy for almost all earth ecosystems.


What is the primary source of energy for a food web?

The primary source of energy for almost all food chains is the sun. The usual series is that the sun provides energy to plants that provide to other creatures. Some ecosystems rely on other energy sources however. For instance some deep ocean ecosystems rely on geothermal energy harvested by bacteria.


What is the primary source of energy in all food chains?

The Sun is the primary source of all energy in nearly all food chains. However, some deep-sea ecosystems utilize heat from underwater thermal vents as their primary energy sources since sunlight is virtually nonexistent.


What is the main source of energy that powers most ecosystems on earth?

The sun Added: This is definitely true. Sunlight affects all surface and shallow water ecosystems. All though the sun provides us with a primary source of energy for almost all of earth's ecosystems, with proof of greenery from photosynthesis; this is not the case in such areas like the land of the Sahara desert and the Southwest climates of the USA. The lack of abundant water is another factor.


What is the source of energy for the most ecosystems?

the sun


What is the major source of energy in most ecosystems?

Solar energy.


What is the source of energy in a ecosystems?

The sun is the main sourse.


For most ecosystems, what is the ultimate source of energy?

The Sun


Ultimate source of energy for terrestrial ecosystems?

carbon


Main source of energy for all ecosystems?

the sun


How does the energy from the primary source move through the prairie ecosystem?

A prairie and a desert are different biomes and very distinct from each other. However, the primary source of energy in almost any ecosystem is the sun.


What Name for biochemical reaction that source energy for ecosystems?

photosynthesis