the renal medulla has triangular shaped structures separated by: a) renal cortex b) minor calyx c) renal columns d) renal pyramid e) major calyx​

a- multicellular

b-eukaryotic

c-no cell wall

d-heterotrophic

e-autotrophic

well for one plants are always the producer, so a is the answer. a wolf is more of the consumer(predator) and the deer is the prey so i know those two are out of the question. also mushrooms are fungi/fungus so a is the producer.

the answer is c. it will give up it's valence electron to the other atom.