All the following are components of ecosystem except the ................. .

• animals

• soil

• plants

• stars

Ecosystem is any ................. area including living organisms and non-living things.

• natural

• artificial

• deep

• all of the above

All the following are living organisms of an ecosystem except the ...................... .

• insects

• plants

• air

• birds

All the following are the components of the ocean ecosystem except ................ .

• fish

• dolphins

• deers

• sharks

Which of the following is a very large ecosystem? .................. .

• The ocean

• The water pond

• The desert

• The universe

All of the following are large ecosystems except the .................... .

• desert

• water pond

• forest

• sea

Introducing rabbits into an island that is a suitable environment with much food and no enemies will lead to the environmental ...................... .

• balance

• imbalance

• equilibrium

• growth

The balance among the components of the ecosystem is known as the ................. .

• environmental balance

• saprophytism

• natural balance

• predation

Cutting trees to build houses causes the environmental ....................... .

• balance

• disturbance

• envelope

• camouflage

The interaction among the components of the environment is a/an .............. process.

• disturbed

• variable

• imbalanced

• continuous