True or false carbon dioxide is produced naturally, through volcanic activity

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

Hurry where is the majority of earth's water found? o glaciers o oceans ground o rivers and lakes

The activity of the modern sample is 1.10 bq . how long does that measurement take?