Question

1. how do invasive species affect biodiversity?

a. they enhance the genetic diversity of native species
b. they have no impact on local ecosystems.
c. they disrupt native species and biodiversity
d. they promote the growth of native flora

1. which of the following is a characteristic of an s - shaped curve on a population growth graph?

a. population grows without bounds
b. constant growth rate throughout time
c. population crashes after reaching maximum size
d. growth rate slows as population approaches carrying capacity

1. which population characteristic refers to the number of individuals per unit area?

a. dispersion
b. size
c. density
d. distribution

Explanation:

• For question 7: Invasive species often out - compete native species for resources, disrupt food webs, and can lead to a decrease in native species populations, thus disrupting biodiversity.
• For question 8: An S - shaped (logistic) population growth curve shows that as the population approaches the carrying capacity of the environment, the growth rate slows down due to limited resources.
• For question 9: Population density is defined as the number of individuals per unit area.

Answer:

1. c. They disrupt native species and biodiversity
2. d. Growth rate slows as population approaches carrying capacity
3. c. Density