A relationship between two species in which one species lives in or on the other is
A. predation.
B. niche sharing.
C. resource partitioning.
D. coevolution.
E. symbiosis.
E. symbiosis.
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While synthesizing a new blue pigment, a chemist notices that the new compound congregates between an aqueous (water) environment and a hydrophobic environment. When added to a mixture of oil and water, the pigment creates a blue ring around the droplets of oil. Which of the following statements best describes this new pigment?
A) The pigment is a polar molecule and is forming hydrogen bonds with both the water and oil molecules. B) The pigment is hydrophilic and will not form hydrophobic bonds with the oil. C) The pigment is amphipathic, having polar and nonpolar regions. D) The pigment is neither polar nor nonpolar; it is apolar. E) The pigment is probably hydrophobic and is attempting to bond with the oil.
T-cell tolerance induced in the thymus and B-cell tolerance in the bone marrow is called peripheral tolerance.
Answer the following statement true (T) or false (F)
When a given area is saturated with territories, excluded individuals who lack a territory soon die of starvation
Indicate whether the statement is true or false
From what food source do most of the calories in a typical American diet come?
A) meat B) cereal grains C) legumes D) plant leaves