grade 5 , con 3 , leeson 6

Which of the following human activities don't harm a marine ecosystem ?

• Throwing plastic products in water.

• Leakage of oil into water.

• Overfishing and damaging of coral reefs.

• Recycling of plastic products.

Habitat restoration projects allow scientists to that occur to ......an ecosystem.

• increase harms

• decrease harms

• keep harms

• increase damages

Removing plants in an ecosystem negatively impacts

• water.

• sunlight

• primary consumers

• nonliving things.

The place in which we can take care of small pieces of coral until they grow up is located in

• seas

• air.

• deserts.

• forests.

The area in which the scientists take care of small pieces of coral until they grow up is known as

• food chain.

• food web.

• grassland.

• nursery

All the following processes show coral reefs in healthy conditions, except process.

• growing

• bleaching

• reproducing

• filtration

To reduce pollution, we have to replace white plastic forks with

• wooden forks.

• black plastic forks.

• yellow plastic forks.

• green plastic forks.

"Zero plastics" project that is applied in Egyptian coastal communities, means that the using of plastic products decreases by

• 0%

• 10%

• 90 %

• 100%

Removing plants negatively affects consumers in an ecosystem

• TTrue

• FFalse

People near the coastal areas must replace plastic bags with cloth one

• TTrue

• False