Ecology

What may happen if the snowshoe hare was removed from the food web pictured?

• The insects in the habitat would increase.
• The shrew population would decrease due to being only hawk food source.
• The willow tree population would decrease.
• Foxes would dies due to no food source. 

In the energy pyramid here, how much of the energy in the producers gets passed to the herbivores?

• 10%
• 20%
• 80%
• 90%

The numbers of predators and prey often follow cyclic ____ over time.

• biotics

• ecosystems

• patterns

• limits

Which of the following could be a limiting factor for a cat?

• too many trees

• just enough heat

• not enough water

• not enough dogs

Another word for producer is

• autotroph

• heterotroph

• carnivore

• decomposer

Which animal is the apex predator?

• hawk
• lizard
• snake
• grass

What is the carrying capacity of the graph?

• 1000

• 8000

• 800

• 600

What happens if a population grows past its carrying capacity?

• The population keeps growing

• The population starts to die off

• The entire species will go extinct

• The carrying capacity just increases

Something that regulates the size of a population is called...

• a limiting measure

• a limiting factor

• carrying capacity

• biodiversity

What is the carrying capacity of the graph?

• around 500

• more than 800

• less than 300

• around 700