The Masai people of Kenya, in east Africa, regularly consume the blood and milk of their cattle. The cattle derive a net benefit because the Masai also protect them from predators and help them find water and food
Based on this information, the relationship between the Masai and cattle is best classified as
A) predation. B) mutualism. C) coevolution. D) competition. E) parasitism.
B
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Which of the following could be a density-independent factor limiting human population growth?
A) social pressure for birth control B) earthquakes C) plagues D) famines
Before being loaded into the phloem for translocation, the carbohydrates produced during
photosynthesis must be converted into which molecule? a. glucose b. fructose c. maltose d. sucrose e. galactose
What is one cellular characteristic found in all prokaryotic and eukaryotic cells?
a. nucleus b. nucleoplasm c. chloroplast d. mitochondria e. plasma membrane
The emergence of many diverse species from a common ancestor that finds itself in a new environment is called
A) adaptive radiation. B) gradualism. C) disruptive selection. D) allopatric speciation. E) hybridization.