a. they cause a harmful change. b. they cause a helpful change and the soil firms up around them. c....

Science Rocks!

A Chapter 6 Review Game

A. They cause a harmful change.

B. They cause a helpful change and the soil firms up around them.

C. They cause a helpful change since their digested materials enrich the soil.

D. They cause a harmful change since their digested materials pollute the soil.

* How do earthworms affect the environment as they move through soil?

A. They have no natural predators.

B. They release toxins that pollute the water.

C. They are predators of many native species.

D. They release gases that hurt other species.

* Why does introducing zebra mussels harm an environment?

A. It increases the population of others plants.

B. It decreases the population of fish and other animals.

C. It increases the amount of oxygen reaching other aquatic plants.

D. It decreases the amount of sunlight reaching other aquatic plants.

* A plant reproduces quickly and forms a thick mat on top of the water. How does this affect the lake environment?

A. Familial adaptation

B. Structural adaptation

C. Behavioral adaptation

D. Environmental adaptation

* In the Galapagos Islands, finches on different islands have beaks of different shapes so that they can gather food on the island where they live. What type of adaptation is this?

A. A frog has slimy green skin

B. A flamingo is born with white feathers

C. A snowshoe hare turns white in the winter

D. A dog has a different fur color than its mother

* Which of the following is an example of how the environment affects the appearance of an organism?

*Which of the following is a behavioral adaptation?

A.A female lion teaches its cubs how to hunt

B.A group of bees that work together

C.A hummingbird has legs that tuck close to the body

D.A flamingo’s feathers turn pink after eating crustaceans

*What do you call a change in an organism’s genes that can be passed from parent to offspring?

A.behavior

B.mutation

C.alteration

D.adaptation

A.2/3

B.¾C.¼D.½

* A lion cub inherits what fraction of its genes from its mother?

A. It attracts insects that nest in the mane.

B. The mane blows in the wind to help keep the lion cool.

C. The mane makes the lion look bigger and protects its neck.

D. The mane allows lions to recognize other males in the same pride.

* Why do male lions have a mane around their neck?

A growing number of disease-causing bacteria are resistant to current antibiotics. How did some bacteria become resistant to antibiotics?A. Every generation has some bacteria resistant to

antibiotics

B. A new generation of bacteria developed with a natural resistance to antibiotics

C. Some bacteria adapted to living with antibiotics and passed their genes to their offspring

D. Bacteria changed their environment so they would no longer live where antibiotics are used.

A. Increased home building

B. Decreased amount of prey

C. Widespread use of pesticides

D. Introduction of new predators

*How did the bald eagle become endangered?

A. The insect population increases.

B. The insect population decreases.

C. The entire insect population dies.

D. The entire insect population mutates.

* How does spraying pesticides on crops affect the insect population?

A. The habitat will remain unchanged.

B. The habitat will become more polluted.

C. The habitat will immediately be exactly like it previously was.

D. The habitat will gradually become more like it previously was.

* Acid rain can damage lake habitats. People put lime into lakes to counteract some of the effects of acid rain. What most likely happens to the lake habitat after people add lime?

A. Extinct

B. Vulnerable

C. Endangered

D. Jeopardized

*What do you call an organism that no longer has any members of its kind alive?