received from parents
passed to offspring
caused by the environment
caused by mutation
Correct answer is C
No explanation has been provided for this answer.
Which of the following statements is not true about continuous variation? It
is usually controlled by several genes
can be influenced by environmental factors
follows a normal distribution curve
is usually controlled by one or two pair(s) of genes
Correct answer is D
No explanation has been provided for this answer.
Which of the following activities promotes forest conservation?
Lumbering
Using firewood to cook
Afforestation
Producing paper
Correct answer is C
No explanation has been provided for this answer.
Which of the following practices improves crop yield in clayey soil? Addition of
more water and humus
lime and humus
fertilizers
weedicides and fertilizers
Correct answer is B
No explanation has been provided for this answer.
Leguminous crops are incorporated into crop rotation in order to
improve aeration of the soil
promote nitrogen fixation
increase the rate of soil formation
improve upon the water holding capacity of the soil
Correct answer is B
No explanation has been provided for this answer.