Salamanders can regrow entire limbs and regenerate parts of major organs, an ability that relies on their immune systems, research now shows. ... They then wiped out some or all of the macrophage cells to determine whether these cells were essential for regrowing the limbs.
The answer is Every action has an equal and opposite reaction
Answer:
A, nouns
Explanation:
starvation, construction, etc they form verbs to nouns
