Answer:
I think it's this one: Melanie can talk while riding her bike, but she can't sing.
The action of taking something in and keeping it as your own. Whether it be a child or inanimate object.
The threat of an unsafe environment
Answer:
A. homeostasis by removing urea, water, and other wastes in the blood.
Explanation:
The kidneys function to remove waste and excess from the body by urination.