Indians- Healthy and Unhealthy Ecosystems

A ______ is any organism that makes its own food.

• animal

• producer

• consumer

Tags

NGSS.MS-LS1-6

Energy enters most ecosystems as ______.

• moving air

• water

• sunlight

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Plants turn sugar into _____ for storage so they can have energy even when they cannot perform photosynthesis.

• starch

• fat

• protein

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

During photosynthesis, plants produce sugar and _____.

• carbon dioxide

• light

• oxygen

Tags

NGSS.MS-LS1-6

In his experiment, Jan van Helmont concluded that

• trees grow better in wet soil than dry soil

• trees do not get the matter they use for growth from soil.

• trees convert matter from carbon dioxide into soil.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

What are two things that algae need to make food.

• soil and water

• carbon dioxide and water

• soil and sunlight

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-1

Photosynthesis is the process that plants use to make food from water and carbon dioxide. Which part of the plant is mainly responsible for capturing carbon dioxide for photosynthesis?

• leaves

• stem

• roots

Tags

NGSS.MS-LS1-6

Kiara brought home a new plant from the nursery. She put it near the window in her room where it would get lots of sunlight. She knew that, like all producers, plants need energy to make food. They also need matter. Where does this matter come from?

• from animals

• from sunlight and soil

• from carbon dioxide and water

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

All the plants in an ecosystem depend on photosynthesis to make food. But photosynthesis is also important to the animals, like this bald eagle, that live in the ecosystem too. What kind of matter does photosynthesis produce that the eagle needs to survive?

• carbon dioxide

• water

• oxygen

Tags

NGSS.MS-LS1-6

The burning of fossil fuels has led to a build-up of carbon dioxide in Earth’s atmosphere and a rise in global temperatures. Scientists refer to this phenomenon as global warming or climate change.

Many scientists wonder about the effects of climate change on Earth’s ecosystems. For example, how might an increase in carbon dioxide in the atmosphere affect plant growth? To find out, they did an experiment.

First, the scientists marked out several plots of trees. Within each plot, they placed a ring of vent pipes. The pipes in half of the rings released air with normal amounts of carbon dioxide. The pipes in the other half of the rings released air with more carbon dioxide.

Later, the scientists compared the growth of trees in each type of plot. What did the data show?

• Trees in the plots with increased carbon dioxide grew much more than trees in the other plots.

• Trees in the plots with increased carbon dioxide grew less than trees in other plots.

• There was no difference.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4