Question

8 which of the following is not a factor that can change an environments carrying capacity?
a. changes in habitat
b. natural disasters
c. changes in the species reproductive strategy
d. resource availability

9 which of the following species would likely be r-selected?
a. mosquitoes
b. eagles
c. elephants
d. whales

1. which cycle involves the movement of water between the atmosphere, land, and oceans?

a. nitrogen cycle
b. phosphorus cycle
c. water cycle
d. carbon cycle

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

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

1. in logistic growth, what happens to the population growth rate as the population size approaches the carrying capacity?

a. it remains constant
b. it increases rapidly
c. it decreases
d. it fluctuates randomly

1. what term describes the pattern of distribution when individuals are randomly arranged in an ecosystem?

a. uniform dispersion
b. clumped dispersion
c. random dispersion
d. linear dispersion

1. where does the phosphorus cycle primarily occur?

a. rocks
b. atmosphere
c. oceans

Explanation:

• Question 9: Carrying capacity is influenced by resource availability, natural disasters, and reproductive strategies. Demographic stability describes population state, not a factor changing capacity.
• Question 10: Mosquitoes have high reproductive rates, short lifespans, and adapt quickly, fitting r-selected traits (high growth, low parental care). Eagles, elephants, whales are K-selected (low growth, high care).
• Question 11: The water cycle specifically involves water movement between atmosphere, land, and oceans via evaporation, precipitation, etc.
• Question 12: S-shaped (logistic) growth slows as population nears carrying capacity due to resource limits.
• Question 13: Logistic growth rate decreases as population approaches carrying capacity (density-dependent regulation).
• Question 14: Random dispersion means individuals are arranged without predictable pattern.
• Question 15: The phosphorus cycle is primarily terrestrial/aquatic, with minimal atmospheric component (unlike carbon/nitrogen).

Answer:

1. d. Demographic stability
2. a. Mosquitoes
3. c. Water Cycle
4. a. Growth rate slows as population approaches carrying capacity
5. c. It decreases
6. c. Random dispersion
7. a. Rocks (Note: Assuming typo; phosphorus cycles through rocks, soil, water—"Rocks" is the closest option)