The major goal of conservation biology is to
A) restore the biosphere to its previously unspoiled condition.
B) repair the damage to ecosystems done by introduced species.
C) preserve the diversity of living organisms.
D) make the biosphere more habitable for humanity.
E) increase the population sizes of all species.
C
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Food labels provide nutrient information and express the amount of a given nutrient as _____
A) a percentage of the Recommended Dietary Allowances B) International Units C) percent composition of the food product D) calories
In humans, fungi are most likely to infect ____.
A. skin B. blood C. bone D. muscle E. connective tissue
Sixty years of data from the Framingham Heart Study showed that people with low cholesterol had 50% more offspring, on average, than those with high cholesterol. Since it is known that cholesterol level is highly heritable, what can be concluded from this specific observation?
A. High cholesterol reduces an individual's fertility. B. The frequency of people with low cholesterol should increase in the U.S. population. C. Cholesterol level has a major effect on survival. D. Natural selection is largely nullified as an important evolutionary mechanism in modern human populations. E. Ethnic groups that traditionally have more children have a greater frequency of genes for low cholesterol.
All of the following are true of mycorrhizae EXCEPT
A) they are fungi that form beneficial relationships with plants. B) an example is the food delicacy truffles. C) the vesicular-arbuscular mycorrhizae are a type of ectomycorrhizae. D) they enable plants to absorb soil nutrients. E) ectomycorrhizae extend the surface area of roots for nutrient absorption.