Human Impacts on the environment

What are the 4 main aspects of the environment that humans have an impact on?

• land

  water

  air

  soil

• water

  ponds

  lakes

  streams

• land

  water

  air

  vegetation

• plants

  animals

  insects

  fish

Earth is made up of ____% water

• 100

• 97

• 50

• 71

What large object holds most of the worlds fresh water

• iceberg

• Glaciers

• mountains

• ocean water

Over ___% of the earths water is found in oceans as salt water

• 97

• 79

• 91

• 27

What is the draining of water from land into a body of water called?

• puddles

• acid rain

• run off

• streams

How do farmers harm water soucres?

• Fertilizers and Chemicals get washed away and into lakes and streams

• Cow eat all the grass

• Pastures take up to much land

• Farm equipment pollutes the air

What step of the water cycle is shown in this picture?

• Condensation

• Runoff

• Precipitation

• Evaporation

Where can runoff bring water?

• home

• oceans, streams, freshwater, or forest

• only bodies of water

What is deforestation?

• Clearing Earth's forests on a massive scale
• Eating too much vegetables
• Going to a forest and pulling weeds
• Clearing the five trees in my backyard

Deforestation is the cutting down of trees.

• True

• False