Frogs At Risk- Cause and Effect- Science

According to the passage, there has been a decrease in the number of frogs in Ecuador. Which of the following is not a cause of the drop in Ecuador’s frog populations?

• pollution

• drought

• habitat loss

• disease

Tags

NGSS.MS-LS1-5

How does the author organize the information in this passage

• The author describes the cause and effects of a problem affecting frogs.

• The author compares and contrasts reptiles and amphibians.

• The author describes events in chronological order.

• The author provides solutions to a historic problem.

The reader can conclude that if Ecuador’s frog environment were healthy, then

• reptile populations would become extinct

• frog populations would increase

• frog populations would decrease further

• reptile populations would also drop

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Read the following sentence from the passage:“The scientists want governments to pass laws that will reduce pollution and to create parks that protect the amphibians’ habitat.”In this sentence, the word reduce means

• spread

• share

• increase

• lessen

What is the main idea of this passage? (What is the whole passage about?)

• Many different types of frogs live in South America.

• Frogs are amphibians that breathe through their skin.

• Scientists are working to save amphibians.

• South America’s frogs are dying out.

Tags

NGSS.MS-LS2-5

The question below is an incomplete sentence. Choose the answer that best completes the sentence.The eggs hatch into tadpoles ____ frogs lay the jellylike eggs in water.

• instead

• however

• before

• after