ecology

How does human development of land effect the carrying capacity in a given area for a species other than humans?

• It is unaffected.

• It increases but then quickly decreases.

• It is decreased.

• It is increased.

How would a disease that infects and kills jerboa most directly affect the given food web above?

• Leafcutter ant populations would compete more for food.

• The biomass of rattlesnakes and lizards would increase.

• Rattlesnake, badger, and lizard populations would likely decrease.

• Raptor and coyote populations would likely increase.

According to the graph shown, what effect did the brown tree snake have on the birds in Guam?

• The snakes had no effect on the bird populations.

• The snakes caused a decline in the number of bird populations.

• The snakes formed a mutualistic relationship with the birds.

• The snakes caused an increase in the number of bird populations.

How would a sudden increase in parasites, within a population, affect the population's growth?

• The birth rate would increase.

• The growth rate would continue at a steady pace.

• The growth rate would be unaffected.

• The death rate would increase.

Which of the following is the most crucial role of fungi in a balanced ecosystem?

• They act as autotrophs that turn energy from the Sun into glucose and oxygen.

• They serve as decomposers and recycle nutrients.

• They serve as tertiary consumers.

• They serve as primary producers.