The immune system protects the body against foreign substances and disease-causing organisms. The immune system is made up of many different types of special cells, tissues, and organs. Which of the organs pictured above plays a major role in the immune system?
A.
gall bladder
B.
kidney
C.
spleen
D.
pancreas

Vegetation that grows along the floors of tropical and temperate forests is called undergrowth. how is the undergrowth of a tropical rain forest most likely to differ from the undergrowth of a temperate forest? a. a tropical rain forest's undergrowth most likely experiences periods of dormancy during colder weather. b. a tropical rain forest's undergrowth most likely experiences periods of dormancy during rainy weather. c. the undergrowth of a tropical rain forest most likely requires less sunlight. d. the undergrowth of a tropical rain forest most likely requires more sunlight.

What processes would you expect to be key in the production of yogurt ?

Kudzu vines grow by climbing and wrapping around trees. trees covered by kudzu can die because they are starved of sunlight. what type of relationship exists between the trees and the kudzu growing on them?