DCA REVIEW: Organisms & Environments

What is one way a drought changes an environment?

• animal habitats are flooded

• plants have more room to grow

• beaches wash away

• animals migrate and leave in search of water

What word means "an animal that hunts other animals for food?"

• predator
• prey
• consumer
• pet

A period with no rain is called...

• Famine

• Drought

• Landslide

• Flood

The place in which a plant, animal, bird or fish normally lives is its ........

• Eco-friendly

• Food chain

• Habitat

• Eco-community

Eagles nest high in dead trees. All of the dead trees in an area are knocked down during a flash flood. Why does the number of eagles in the area decrease?

• the eagles start nesting in live trees instead of dead trees

• the eagles no longer have a good place to build nests

• the eagles have more materials with which to build nests

• the eagles start nesting on the ground instead of in dead trees

Use the food chain below to answer the question.

Sun > Grass plants > crickets > Frogs > Snakes

If the population of snakes increases, the population of frogs will most likely

• decrease

• increase

• remain the same

• double

Which of the following could not survive in a forest ecosystem?

• Moss

• Cactus

• Shrubs

• Ferns

The original source of the energy that flows through a food chain is -

• The Sun

• Wind

• Rainfall

Which type of consumer eats plants only?

• Herbivores
• Omnivores
• Carnivores
• Scavengers

What do the arrows represent in a food chain picture?

• They always point to the smallest animals.

• They point to the animal that tastes the best.

• They always point to the producers.

• They point in the direction that energy is flowing.