Life Finds a Way

1.

1 point

Choose the answer that best completes the sentence below.

"Scientists now know that life exists deep in the ocean around hydrothermal vents; _________, they thought that nothing could live there."

previously

currently

for example

therefore

2.

1 point

Explain how the bacteria and animals around the hydrothermal vents showed scientists that life was much more adaptable than they had believed.

3.

1 point

What is the one reason that people used to think that nothing could live deep down in the ocean?

There was no sunlight down there.

Some bacteria make food form sulphur.

Europa has very large oceans.

Life is extremely adaptable.

4.

1 point

Read the following sentences: "Some animals that live in places where it is very snowy, like high in the mountains or in the arctic, end up white so that they fit in better. Animals and plants that live in the desert, like cacti and camels, have evolved so that they need only the very little water that they get living there."

What can be concluded from this information?

Plants evolve more quickly than animals do.

Animals and plants change over time based on where they live.

Animals are better suited to living in the desert than in places where it is very snowy.

Animals evolve more quickly that plants do.

5.

1 point

What is the main idea of this passage?

For many years scientists thought that nothing could live near a hydrothermal vent.

Some bacteria use sulfur to make food in a process known as chemo synthesis.

Life is extremely adaptable and can be found even in harsh environments.

Scientists now think that life may exist on Europa, one of Jupiter's moons.

6.

1 point

What is the result of the discovery of life deep in the ocean?

Scientists realized that life can exist in places without sunlight and oxygen.

Scientists learned that sunlight is necessary for the process of photosynthesis.

Scientists realized that sulfur is poisonous to most living things on Earth.

Scientist became confident that nothing could live around a hydrothermal vent.

7.

1 point

Read the following sentence: "All different kinds of places on Earth have animals and plants that have adapted over many years to thrive in the particular places where they live."

What does "adapted" mean in the sentence above?

changed

played

died

run away

8.

1 point

What does this passage describe?

This passage describes the formation and discovery of hydrothermal vents.

This passage describes life deep in the ocean and the process of natural selection.

This passage describes the process of photosynthesis and all the plants that use it.

This passage describes the importance of camels to the other animals living in the desert.

9.

1 point

How did the bacteria and the animals that scientists discovered around the hydrothermal vents get food?

10.

1 point

According to the passage, why did scientists think that nothing could live around hydrothermal vents?