Producers, Consumers, Decomposers
Food Chains and Food Webs
Cycles of Matter
Earth's Systems
Energy in Ecosystems
100

What do we call organisms that make their own food?

What are producers?

100

The first organism in every food chain is always a ______.

What is a producer?

100

Plants get carbon dioxide from the ______.

What is the air?

100

The part of Earth that contains all living things is the ______.

What is the biosphere?

100

What is the original source of almost all energy in an ecosystem?

What is the Sun?

200

What do we call organisms that must eat other organisms for energy?

What are consumers?

200

What do the arrows in a food chain show?

What is the direction energy flows?

200

Water evaporates from a plant’s leaves in a process called ______.

What is transpiration?

200

The layer of gases around Earth is the ______.

What is the atmosphere?

200

Animals that hunt other animals are called ______.

What are predators?

300

Mushrooms and worms break down dead things. What type of organism are they?

What are decomposers?

300

A model of many connected food chains is called a ______.

What is a food web?

300

The nitrogen cycle moves nitrogen between the air, organisms, and the _____.

What is soil?

300

Water on Earth—including oceans, rivers, and lakes—belongs to what system?

What is the hydrosphere?

300

Why do living things need energy?

What is “to grow, move, and carry out life functions”?

400

A bear eats berries and fish. What type of consumer is it?

What is an omnivore?

400

In a food web, animals that are eaten by other animals are called ______.

What is prey?

400

What do plants use sunlight to make during photosynthesis?

What is food (glucose)?

400

True or false: Water is an abiotic factor.

What is true?

400

Which organism in an ecosystem always starts the flow of energy?

What is a producer?

500

Explain why all consumers depend on producers

What is “because producers make the food energy that all organisms depend on”?

500

Why would removing one organism from a food web affect the whole ecosystem?

What is “because each organism depends on others for energy, so removing one causes changes throughout the food web”?

500

Explain why cycles like the nitrogen cycle and carbon cycle are important.

What is “they recycle materials living things need to survive”?

500

Give an example of how a change in one Earth system affects another.

What is something like “rainfall (hydrosphere) washes away soil (geosphere)”?

500

Describe how energy moves through an ecosystem.

What is “energy moves from the Sun → producers → consumers → decomposers”?