Ecosystems CKLA Ch 6

What do butterflies depend on for food?

• Tree bark

• Grass

• Nectar from flowers

• Leaves

How did early humans get their food?

• By farming

• By fishing only

• By hunting and gathering

• By shopping

What was one of the first technologies used by humans?

• Computers

• Stone and wood tools

• Electricity

• Cars

What did humans learn to do instead of hunting animals?

• Travel to space

• Build bigger houses

• Plant more trees

• Raise animals like cows and chickens

What is an example of a human-made change to the environment?

• A natural forest

• A wheat field

• A mountain

• A river

What is the Hoover Dam used for?

• Fishing

• Building houses

• Generating hydroelectric power

• Growing crops

What did the Hoover Dam change along the Colorado River?

• The natural flow and ecology

• The height of the mountains

• The color of the water

• The number of boats

What do some animals in cities have to do to survive?

• Learn to live in a human-made environment

• Find new planets

• Grow their own food

• Build their own houses

What is a natural ecosystem?

• A highway

• A shopping mall

• A forest or grassland

• A city park

What is one way humans have changed the land for farming?

• By creating lakes

• By planting trees

• By building skyscrapers

• By clearing forests for pastures