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Start learning 50% faster. Sign in nowSpeed of the boat in still water = 140 ÷ 14 = 10 km/h Speed of current = 10 × 0.25 = 2.5 km/h Therefore, upstream speed of the boat = 10 – 2.5 = 7.5 km/hr Required time taken = 82.5 ÷ 7.5 = 11 hours
Which of the following is a symptom of protein-energy malnutrition (PEM)?
________carries/carry hereditary material.
Which of the following statements is incorrect about dietary fibres?
What is the primary nitrogenous waste product excreted by humans?
In angiosperms, double fertilization involves:
Monocotyledons and dicotyledons are subdivisions of which plant group?
Alveoli are related to which system of the human body?
Which of the following controls/control the growth of bollworms ?
Which of the following is NOT a symptom of Amoebiasis?