2011 - WAEC Biology Past Questions and Answers - page 5
The falling off of leaves of deciduous trees is helpful to the plant because it
A sample of wet garden soil of known weigh was heated to constant weight. The loss of weight is due to loss of
Assuming that a period of stable population size is followed by a period when natality increases by ten (1O) per cent and immigration increases by twenty (20) percent of population size. The population size will
Which of the following methods does not make water fit for drinking?
Vaccination results in
Leguminous crops are incorporated into crop rotation in order to
Which of the following practices improves crop yield in a clayey soil? Addition of
Which of the following activities promotes forest conservation?
Which of the following statements is not true about continuous variation? It
Acquired characters are