Most organisms in the biosphere exchange the gases oxygen and carbon dioxide with the atmosphere. Which of the following describe an exchange of matter between the atmosphere and the geosphere A. A volcanic eruption releasing carbon dioxide into the atmosphere
B. Carbon dioxide dissolving from the atmosphere into ocean water
C. The remains of living things settling on the floor of the ocean, and then becoming rock
D. Water vapor condensing in the air to form clouds

scientists have discovered that hiv does not cause aids by the virus's direct effect on the host's immune cells, but rather through the cells' lethal influence on one another. researchers from the gladstone institutes have revealed that hiv does not cause aids by the virus's

endo:

regulates body hormones, aldosterone, vasopressin

neural:

signal, regulates body using electric signals, reflex

endo has to do with hormones; aldosterone and vasopressin are both hormones. i also had this question and got it right : d

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands

the three components of a nucleotide are the nitrogenous base, the phosphate group and the five-carbon sugar.