Answer: they allow air to enter lungs and also permits air into the body
Explanation:
Answer:
I dont know what your experiment is but the control variable is the thing your keeping the same.
Explanation:
Answer:
Explanation:
Water dissolves nonpolar covalent substances.
Answer:
In harsh winter, usually there's less food, therefore, rabbits will not be able to find enough food and the population of rabbits will decrease.
