Suppose a chemical spill kills most of the frogs in the ecosystem. Which of the following is most likely to happen?

Some raccoons will leave in search of another food source.

What information does a food web represent about an ecosystem?

The flow of energy through an ecosystem.

What is the purpose of a food web?

shows overlapping food chains and all paths energy can take in an ecosystem

What would most likely happen if all of the decomposers in an ecosystem were removed?

The plants would eventually die because of a lack of nutrients in the soil.

How would the woodpecker population in a forest most likely be affected if a housing development is built in that area?

They would experience a decrease in available food.

Use the information below: Which would most likely cause the population of great horned owls to decrease (get smaller)?

A decrease (less) in the number of rabbits

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Interconnected Relationships in Ecosystems

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Answers

1
As more people have moved to the beach, the sea turtle population has decreased. Which is most likely the cause of this?
tropical storms
habitat loss
warmer temperatures
increase in predators
2
Suppose a chemical spill kills most of the frogs in the ecosystem. Which of the following is most likely to happen?
The raccoons will begin to eat grass.
Some raccoons will leave in search of another food source.
The population of grasshoppers will decrease (get smaller).
The grass will dry up and turn brown.
3
What information does a food web represent about an ecosystem?
The flow of food between animals.
The flow of water through an ecosystem.
The flow of food between decomposers.
The flow of energy through an ecosystem.
4
What is the purpose of a food web?
It shows the flow of oxygen and carbon dioxide in an ecosystem.
It shows how producers use sunlight and carbon dioxide in photosynthesis.
It shows how nitrogen is used by plants and animals in an ecosystem.
shows overlapping food chains and all paths energy can take in an ecosystem
5
What would most likely happen if all of the decomposers in an ecosystem were removed?
animals would eat other types of food because of a decrease in producers
The animals would die because of the spread of disease.
The plants would eventually die because of a lack of nutrients in the soil.
The plants would begin to die out because of a decrease in available water.
6
How would the woodpecker population in a forest most likely be affected if a housing development is built in that area?
They would experience a decrease in available food.
They would experience a decrease in competition.
They would produce more offspring.
They would change the color of their feathers.
7
Read the information below: Suppose a disease kills many of the rabbits in the grassland. Which is most likely to occur?
The mice will run out of food.
The mice will move to another grassland.
The hawks will eat more mice.
The hawks will begin to eat plants.
8
Use the information below: Which would most likely cause the population of great horned owls to decrease (get smaller)?
A decrease (less) in the number of rabbits
An increase (more) in the number of rabbits
A decrease (less) in the number of bacteria
An increase (more) in the number of field grain plants
9
Which population would most likely increase if a chemical was used to kill insects and most of the grasshoppers died?
Grass
Raccoons
The loss of grasshoppers will not affect other populations in the ecosystem
Frogs
10
Which will most likely cause a decrease in predator populations?
an increase in producers
an increase in prey populations
a decrease in decomposers
a decrease in prey populations

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