Unit 3 - FC 2

_______ is a biotic and abiotic element that surrounds humans.

• Ecology

• Environment

• ecosystem

• Geology

The process of _____ occurs when the surface of the land is worn away and lost

• Emission

• Desertification

• Erosion

• Deforestation

Acid rain is one of the harmful effect of ___ pollution

• air

• water

• noise

• land

______ development focuses on improving the quality of human life without increasing the use of natural resouces.

• Environment

• Sustainable

• Human

• Ecological

The ______ is the solid rocky crust covering entire planet.

• Lithosphere

• hydrosphere

• Biosphere

• atmosphere

The _____ is composed of all the water on or near the earth.

• lithosphere

• hydrosphere

• biosphere

• atmosphere

The _____ is a layer of gases surrounding our planet.

• lithosphere

• hydrosphere

• biosphere

• atmosphere

In an ecosystem , the ______ are primary producers.

• animals

• birds

• plants

• consumer

The ____ are the small living beings such bacteria , insect and fungi.

• Primary producers

• Consumers

• decomposers

• terrestrials

_____ gas protects us from UV rays emitted by sun.

• Ozone

• Carbon dioxide

• Nitrogen