Answer:
probably b because a producer is a plant and the secondary producer is eaten by the tertiary consumer so it's not a nor a
Explanation:
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Answer:
it prevents for things to go in and out of it, kinda like a cell membrane.
Answer:
In Newtonian physics, free fall is any motion of a body where gravity is the only force acting upon it.
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Explanation:
<u>Photosynthetic protists serve as producers of nutrition for other organisms.</u>
<u>Protists like zooxanthellae have a symbiotic relationship with coral reefs; the protists act as a food source for coral and the coral provides shelter and compounds for photosynthesis for the protists.</u>