Which of the following is a risk of low crop diversity?
a. The crop will mutate to have characteristics that are harmful to humans.
b. Humans will never discover potential pharmaceuticals in existing species.
c. The crop is more vulnerable to diseases.
d. Agricultural companies are more likely to lose revenue by not having diverse commercial offerings.
c. The crop is more vulnerable to diseases.
Crops that lack genetic diversity are more vulnerable to disease, such as what happened with the Irish potato famine, when one disease wiped out the predominant potato variety, leading to famine, death, and mass emigration.
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Joseph Lister
A. pioneered the use of gamma rays for sterilizing food. B. designed and built the first autoclave. C. demonstrated that microorganisms are carried on dust particles in the air. D. revolutionized surgery by introducing phenol as a disinfectant.
What type of thinking is required?
What will be an ideal response?
A population of 1,000 individuals with a per
capita growth rate of 1.0 per year in an environment with unlimited resources will number ____ four years later.
a. 1,000 b. 1,400 c. 4,000 d. 16,000 e. 160,000
Promising options being explored to control fire ants
include a. biological controls. b. pesticides. c. wholesale physical destruction of their mounds. d. herbicides. e. all of these.