The fish don't need the direct energy from the sun but it does help to provide heat to the water which warms up and this is a very slow process also the fish eat herbivores that eat plants and the plant need the sun energy so photosynthesis can occur and as you move up in the food web or chain the fish will eventually eat something else that ate the plant.
A square kilometer of forest has roughly two hundred deer. The term used to describe this number would be population density. It is a key geographic term used to describe living organisms in a specific area.
Answer:
The starfish Pisaster ochraceus is a keystone species in the rocky marine intertidal communities off the northwest coast of North America. This predatory starfish feeds on the mussel Mytilus californianus and is responsible for maintaining much of the local diversity of species within certain communities. A keystone species is an organism that helps define an entire ecosystem. Without its keystone species, the ecosystem would be dramatically different or cease to exist altogether. This means that if the species were to disappear from the ecosystem, no other species would be able to fill its ecological niche.
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Answer: I believe it is 4
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Answer: The Answer is C
Explanation: The deer is eating getting carbon by eating the grass (the producer)
