Unit 2 Science

What are the basic needs of all plants?

What are the tiny openings on the underside of most leaves called?

• Stomata

• Veins

• Petiole

• Chloroplast

Abiotic factors are the ______ things in the environment.

• nonliving

• living

• biotic

• organic

Herbivores eat _______.

• plants

• meat

• insects

• fish

What role do predators play in ecosystems?

• They help control the population of prey species.

• They provide food for plants.

• They are the primary producers of energy.

• They decompose organic matter.

True or False: Decomposers break down plant and animal matter into simpler substances.

• True

• False

The hydrosphere covers more than what percentage of Earth’s surface?

• 50%

• 60%

• 70%

• 80%

Where is most of Earth’s saltwater found?

• Rivers

• Lakes

• Oceans

• Glaciers

What is the biosphere?

• A) A layer of gases surrounding the Earth

• B) All of Earth's living things

• C) The solid outer layer of the Earth

• D) A large body of water

What do all food chains end with?

• Producers

• Consumers

• Decomposers

• Herbivores