Answer:
It is secreted by the renal tubules
Explanation:
The answer is skeleton.
Please correct me if I'm wrong!! :)
Those proteins are called apolipoprotien.
Heterotrophs eat Autotrophs & depend on them for their energy supply
Hope this helps!
Answer:
D is rhe answer of rhis question.
Explanation:
collection of cells make tissue, collection of tissues form organ, similarly group of organs combine to form a system and when these systems combine it forms a whole body of organism.