How is carbon dioxide fixed into carbon that is usable for biological life? Volcanic activity
Decomposition
Photosynthesis

What is the importantence of the carbon and nitretan cycles in the environment

The nervous system interacts with the endocrine system by a. using hormones as connections b. sending nerve impulses directly to glands c. using neuroendocrine cells as connections d. sending neurotransmitters directly to neurons

Regarding most of the narrator’s story, which word best describes the tone?