Looking at the model above, if the hawks are increased, what will happen to the
grass? Please explain your reasoning.
Question 5
5.
Question 6
6.
Question 7
7.
Question 8
8.
If a bird eats a mouse that eats grass, the bird is a(n)
producer.
second-level consumer.
first-level consumer.
decomposer.
The first organism in a food chain is typically a(n)
consumer.
herbivore.
carnivore.
producer.
In an energy pyramid, which level has the most available energy?
producer level
first-level consumer level
second-level consumer level
third-level consumer level
Which of these organisms are in a trophic level that receives a larger percentage of the energy captured by the producers than the percentage received at the shrews' trophic level?
squirrel
hawk
mountain lion
snake
The image shows an energy pyramid for a forest ecosystem. The apex consumer level of this ecosystem contains between 500 and 1000 kilograms of biomass.
Which statement best describes the amount of biomass at the level of the producers?
Much larger than 1000 kilograms.
Less than 50 kilograms.
Between 50 and 500 kilograms.
Between 500 and 1000 kilograms.
Which of the following organisms is found in the trophic level with the greatest biomass that sustains the ecosystem represented by this food web?
amphipod
heron
redfish
seaweed
Which of the following is a biotic factor that might affect the life of a plant?
