Ecosystems

Front

Which of the following is a TRUE statement about humans and the environment?

• All human activities destroy habitats
• All human activities are good for the environment
• All human activities are bad for the environment
• Some human activities are good for the environment

Back

Some human activities are good for the environment

Front

Decomposers such as fungi, insects, and molds get their energy from __________.

Back

Decaying plants and animals

Front

How would an increase in the number of new snakes hatched in the forest affect other organisms that year?

Back

The tigers would have more to eat.

Front

How is the role of the decomposers different from the role of the producers in the rainforest?

Back

The decomposers break down dead organisms.

Front

Why include the sun in an ecosystem model?

Back

The sun provides the energy for the production of food in the ecosystem.

Front

Which of the following statements about producers is CORRECT?

• they make their own food
• they eat other organisms
• they make things other than food
• they obtain food by breaking down the remains of other living things

Back

they make their own food

Front

Which of the following statements about consumers is CORRECT?

• they make their own food
• they eat other organisms
• they make things other than food
• they obtain food by breaking down the remains of other living things

Back

they eat other organisms

Front

Which of the following human activities has a positive effect on the environment?

• planting new forests
• recycling paper and plastic
• protecting endangered species
• All of the above

Back

All of the above

Front

How does an increase in the number of people on Earth negatively affect the environment?

Back

All of the above: more water is used causing droughts and affecting habitats, more fossil fuels are burned, habitats are destroyed because more space is needed.

Front

A wetland has been cleared to make space for a new housing development. Which of the following would be considered a negative effect to the bog turtle, a native organism living in the area?

• the bog turtles would eventually be taken in by residents as pets
• a new man–made lake would provide cleaner water to the bog turtle than the wetland
• there would be less predators in the area to prey on the bog turtle
• the bog turtle would no longer have the habitat it is accustomed to in which to lay its eggs

Back

the bog turtle would no longer have the habitat it is accustomed to in which to lay its eggs