The direction wind is determined by

A. an anemometer

B. a Secchi disc

C. a wind vane

D. a barometer

Food webs are complex because

A. the number of producers are large

B. many animals feed directly on producers

C. they include primary, secondary and tertiary consumers

D. some animals form part of several food chains

Special modification which enable an organism to survive in its habitat is known as.

A. adaptation

B. tolerance

C. mimicry

D. colouration

Which of the following relationships does not involve two organisms?

A. Commensalism

B. Saprophitism

C. Symbiosis

D. Parasitism

Overcrowding in a population does not result in

A. death

B. commensalism

C. competition

D. migration

A pandemic is an outbreak of disease that

A. is confined to a town

B. is wide spread

C. will not spread

D. has limited spread

The rational and prudent use of natural resources is known as

A. presrevation

B. conservation

C. utilization

D. management

Which of the following natural resources cannot be conserved?

A. soil

B. water

C. wildlife

D. air

Which of the following actions supports conservation? To

A. protect endangered species

B. preserve trees for timber

C. permit hunting activities

D. provide income for the government

A noticeable physical appearance of individuals of the same species is called

A. physical variation

B. morphological variation

C. physiological variation

D. discontinuous variation