Which statement correctly describes the immune system of a person with aids

it uses only the humoral response
it has many memory cells
it has more antibodies than it can use
the number of t cells is low

What are the result of when individual components in an organism interact with others to create noval stucture and function called

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above

Describe the change in phase and temperature as water moves from the oceans to the atmosphere and then returns to earth again as rain. a) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature decreases b) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature increases c) evaporation : temperature decreases; condensation : temperature decreases; precipitation (rain) : temperature decreases d) evaporation : temperature increases; condensation : temperature increases; precipitation (rain) : temperature decreases