An ectotherm is an animal that is dependent on external sources of body heat
An endotherm uses heat that its body produces
So the best likely answer would be C.<span> whether or not the animal maintains a constant body temperature</span>
Every one except the 4th one just did it on edgeunity
Emergent Properties at the Tissue Level. In multicellular organisms, cells are arranged into tissues or groups of similar cells that work together to perform a particular function. For example, a single epithelial cell cannot form a protective layer.
Answer:
I don't know about it. which subject and which class is this
Answer:
allows plants to absorb energy from light.
