Question

13.
humans have promoted the evolution of insects that are resistant to insecticides by which of the following?
○ using the wrong insecticide
a
breeding more useful insects
using insecticides that are outdated
trying to control pests with chemicals
b
c
d
14.
which of these describes the composition of the earths atmosphere?
○ 45% nitrogen, 20% ozone, 20% ozone, 15% water
a vapor
78% nitrogen, 21% oxygen, 1% other gases
43% oxygen, 31% nitrogen, 26% carbon dioxide
62% water vapor, 33% oxygen, 4% nitrogen, 1%
other gases
b
c
d
15.
what property of a population may be described as even, clumped, or random?
○ density
a
dispersion
size
growth rate
b
c
d

Explanation:

1. For question 13: Repeated chemical pest control selects for insecticide-resistant insect individuals, allowing them to survive, reproduce, and pass on resistance traits, driving evolution of resistant populations.
2. For question 14: The Earth's atmosphere is a well-documented mixture where nitrogen is the most abundant gas, followed by oxygen, with small amounts of other gases like argon, carbon dioxide, etc.
3. For question 15: Population dispersion specifically refers to the pattern of spacing of individuals within a population, which falls into even, clumped, or random categories.

Answer:

1. D. trying to control pests with chemicals
2. B. 78% Nitrogen, 21% Oxygen, 1% Other gases
3. B. dispersion