Answer: Your respiratory system breathes it in, the circulatory system transports it around the body
<span>Competition occurs when members of different species compete for the same resource. </span>
D. hormones would be the correct answer, which are chemical substances produced by gakbdd
Answer:
Buffers play an important role in maintaining homeostasis in organisms. - To maintain homeostasis, unicellular organisms grow, respond to the environment, transform energy, and reproduce.
Answer: B) It controls the autonomic nervous system and regulates hunger and thirst sensations.
