Variation is important in human life and can be used for the following activities except
crime detection
population distribution
blood transfusion
determination of paternity
Correct answer is B
No explanation has been provided for this answer.
Pollution reduction
Material recycling
Reforestation
Overgrazing
Correct answer is D
No explanation has been provided for this answer.
A species whose populations has become so small that it may become extinct if not protected is a/an
special species
dangerous species
endangered species
important species
Correct answer is C
No explanation has been provided for this answer.
Which of the following factors will most likely lead to overcrowding within a population?
Absence of predators
Emigration
Food shortage
Absence of territorial behaviour
Correct answer is A
No explanation has been provided for this answer.
In ecological succession, since Iichens grow on bare rock, they are considered to be
primary consumers
pioneer organisms
climax organisms
producers
Correct answer is B
No explanation has been provided for this answer.