Science Exam 3rd grade

An ecosystem is

• A group of plants

• The weather in a certain place

• A community of living things that interact with each other and with the physical world

• The sun and the rain

A rock is an example of a living thing

• True

• False

Give 5 examples of living things

Give 3 examples of Non living things

The ecosystems are classified into

• Terrestrial and Aquatic ecosystems

• Soil ecosystems and air ecosystems

• Living ecosystems and Non living ecosystems

• Light, minerals, and water

What of the following ecosystems is NOT a terrestrial ecosystem?

• Tundra ecosystem

• Marine ecosystem

• Forest ecosystem

• Grassland ecosystem

Desert ecosystems are

• Places with several trees and animals

• Regions covered with snow for most of the year

• Regions where the vegetation is dominated by grasses and herbs

• Regions with very little rainfall

The Cocora Valley is an example of a

• Desert ecosystem

• Tundra ecosystem

• Forest ecosystem

• Marine ecosystem

Aquatic ecosystems are ecosystems present in a body of water

• True

• False

The marine ecosystem includes seas and oceans

• True

• False