shcces p6 sci bk1 ch4 SLG

(?) shows the feeding relationships among living things.

• A food chain

• A food web

• A food chan

• A food chair

Changes in the number of one species can affect the (?) of other species.

• survival

• surver

• surf

• survial

Animal waste, and dead animals and plants break down to become (?) for plant growth.

• nutrients

• nutients

• nurients

• nutiunts

Through the of (?)animals and the (?) of plants, the levels of oxygen and carbon dioxide are kept in balance.

• respiration, photosynthesis

• respection,photopsythesis

• respivation,photosthythesis

Urban development can damage the(?)and upset the balance of nature.

• ecosystem

• ecnsystem

• ebosystem

• ecosysten

Different (?) should be taken alongside urban development to balance social development, economic development and environmental protection.

• measures

• museums

• measurns

The (?) of animal and plant resources causes some species to become endangered and upsets the balance of nature.

• overuse

• ovenuse

• overusa

• overuser

We should (?) animal and plant resources, and never buy products made from endangered species.

• treasure

• teasure

• truesure

• treasue

The Earth is shared by all living things. We have the (?)to protect it.

• responsibility

• responability

• responsibilty

• resporsibility

To protect the earth, we should do things such as keeping the environment (?).

• clean

• clear

• cry

• cleard