Preserves animal tracks are called trace.
The answer is B. The oak tree. Autotrophs make their own food.
Answer:
Osmoregulation is the active regulation of the osmotic pressure of an organism's body fluids, detected by osmoreceptors, to maintain the homeostasis of the organism's water content; that is, it maintains the fluid balance and the concentration of electrolytes (salts in solution which in this case is represented by body functions.
Explanation:
