Answer:
Explanation:
Catalyst is a substance that influences the reaction but does not participate in the reaction
Answer:
Animals and plants need nitrogen to build amino acids in proteins, which are the building blocks of life. Unlike oxygen, nitrogen cannot be absorbed directly from the air by animals and plants.
Explanation:
D. an arctic fox is brown in summer and white in winter
Absorption of heat by breaking down hydrogen bonds
Answer:
the correct the answer is a
