R4 UNIT 3 INPUT 2 P.43

If humans have a substantial effect on Earth, their effect is of ________________________ .

• no importance

• considerable importance

• little importance

If a change is attributed to some factors, you believe that this change ____________ these factors.

• supported

• was caused by

• led to

If something interferes with a process, it ________________________________________

• supports the development of this process

• prevents this process from continuing properly

• collaborates with this process

If someone is referring to prevailing economic conditions, they are talking about economic conditions which _________________________

• exist at a particular time

• are very harsh

• are optimistic

If a plant depletes oxygen from water, it ___________________________________

• increases its amount

• limits its amount

• reduces its amount

If a country is going through an era of upheaval, it is a period of a ________________________ for this country.

• change which may have positive effects

• change which is likely to cause problems

• change that is barely noticeable

If some changes have a profound effect on people, they have a(n) __________________ on them.

• strong influence

• opposite effect

• negative impact

If something marks the onset of a period, it indicates the ___________ of a period.

• commencement

• transition

• end

If there is a land-use conversion, it means there is a process of ________________________.

• fertilising a piece of land for farming

• changing the current use of a piece of land

• reclaiming land for construction

If human beings have contributed to the demise of some species, they have played a role in driving them towards __________________.

• migration

• an increase in their number

• extinction