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The correct answer is A. 78%
Legumes uses nitrogen to make protein, and the composition of nitrogen in the air is 78%.
sharon kalunda answered the question on July 30, 2019 at 11:39
- Which one of the following pairs consist only of inclined planes? (Solved)
Which one of the following pairs consist only of inclined planes?
A. Wheelbarrow and see-saw.
B. Road winding up a hill and staircase.
C. Ladder and see-saw.
D. Wheelbarrow and staircase.
Date posted: July 30, 2019. Answers (1)
- Which one of the following is the most effective preventive measure against the spread of sexually transmitted infections among the youth in schools? (Solved)
Which one of the following is the most effective preventive measure against the spread of sexually transmitted infections among the youth in schools?
A. Seeking medical attention.
B. Use of condoms.
C. Circumcision.
D. Abstinence.
Date posted: July 30, 2019. Answers (1)
- A lactating mother should feed on a diet rich in calcium and phosphorous in order to (Solved)
A lactating mother should feed on a diet rich in calcium and phosphorous in order to
A. Enable her to regain strength
B. Replace blood lost during birth
C. Improve the immunity of the baby
D. Strengthen the bones of the baby.
Date posted: July 30, 2019. Answers (1)
- Substances that have definite mass and volume are (Solved)
Substances that have definite mass and volume are
A. Solids only
B. Solids and liquids
C. Liquids only
D. Liquids and gases.
Date posted: July 30, 2019. Answers (1)
- The first step in obtaining salt from a mixture of salt solution and pieces of copper wire is (Solved)
The first step in obtaining salt from a mixture of salt solution and pieces of copper wire is
A. Filtering
B. Winnowing
C. Using a magnet
D. Evaporating to dryness.
Date posted: July 30, 2019. Answers (1)
- Which one of the following consists of groups of food that mainly contain fats? (Solved)
Which one of the following consists of groups of food that mainly contain fats?
A. Avocado, groundnuts, coconut.
B. Maize. coconut, beans.
C. Irish potatoes, groundnuts, maize.
D. Irish potatoes, beans, avocado.
Date posted: July 30, 2019. Answers (1)
- The reason why some plants have thick waxy cuticle is to (Solved)
The reason why some plants have thick waxy cuticle is to
A. Store manufactured food
B. Reduce water loss
C. Allow breathing to take place
D. Trap more sunlight.
Date posted: July 30, 2019. Answers (1)
- Which one of the following pairs consists only of omnivorous animals? (Solved)
Which one of the following pairs consists only of omnivorous animals?
A. Chimpanzee and pig.
B. Chimpanzee and hyena.
C. Hippopotamus and crocodile.
D. Hippopotamus and pig.
Date posted: July 30, 2019. Answers (1)
- Which one of the following is advisable when spraying with chemicals?(Solved)
Which one of the following is advisable when spraying with chemicals?
A. Spraying when the temperatures are very high.
B. Wearing a gas mask when spraying.
C. Spraying against the direction of wind.
D. Washing hands before spraying.
Date posted: July 30, 2019. Answers (1)
- Which one of the following diseases is a child immunized against at birth. sixth week, tenth week and fourteenth week after birth? (Solved)
Which one of the following diseases is a child immunized against at birth. sixth week, tenth week and fourteenth week after birth?
A. Measles.
B. Yellow fever.
C. Tuberculosis.
D. Poliomyelitis.
Date posted: July 30, 2019. Answers (1)
- The following are activities that pollute the environment.
(i) Burning charcoal in a closed room.
(ii) Oil spillage from tankers.
(iii) Using diesel as fuel...(Solved)
The following are activities that pollute the environment.
(i) Burning charcoal in a closed room.
(ii) Oil spillage from tankers.
(iii) Using diesel as fuel in vehicles.
(iv) Dumping vegetable waste.
Which activities pollute air?
A. (i) and (iv).
B. (ii) and (iv).
C. (ii) and (iii).
D. (i) and (iii).
Date posted: July 30, 2019. Answers (1)
- Which one of the following statements is TRUE about manures? They (Solved)
Which one of the following statements is TRUE about manures? They
A. Increase the growth of weeds
B. Release specific nutrients to the soil
C. Destroy micro-organism in the soil
D. Cause pollution of the soil.
Date posted: July 30, 2019. Answers (1)
- Which of the following pairs of practices will control ticks, fleas and lice in livestock?(Solved)
Which of the following pairs of practices will control ticks, fleas and lice in livestock?
A. Spraying and deworming.
B. Herding and dipping.
C. Deworming and rotational grazing.
D. Dipping and spraying.
Date posted: July 30, 2019. Answers (1)
- Which of the following is the CORRECT procedure that is used to obtain clear water from muddy water? (Solved)
Which of the following is the CORRECT procedure that is used to obtain clear water from muddy water?
A. Filtering and decanting.
B. Evaporating and filtering.
C. Decanting and filtering.
D. Evaporating and decanting.
Date posted: July 30, 2019. Answers (1)
- Soil becomes waterlogged due to (Solved)
Soil becomes waterlogged due to
A. Its color.
B. The size of its particles.
C. The absence of small animals in it.
D. The amount of air in it.
Date posted: July 30, 2019. Answers (1)
- Which of the following practices will conserve soil? (Solved)
Which of the following practices will conserve soil?
A. Using dry grass for mulching.
B. Burying vegetation on farms.
C. Ploughing along the slope.
D. Burying plastic materials.
Date posted: July 30, 2019. Answers (1)
- Which of the following consists of materials with a definite volume and definite shape? (Solved)
Which of the following consists of materials with a definite volume and definite shape?
A. Water, bottle. Stone.
B. Paper, pin, ink.
C. Kerosene. Cooking oil. Milk.
D. Sand. Flour, sugar.
Date posted: July 30, 2019. Answers (1)
- In an investigation. Equal amounts of soap was added to equal amounts of water samples W and Z obtained from different sources. The following observations...(Solved)
In an investigation. Equal amounts of soap was added to equal amounts of water samples W and Z obtained from different sources. The following observations were made:
(i) W formed lather.
(ii) Z formed suspended particles.
Which of the following statements about W and Z is NOT CORRECT?
A. W may have fewer minerals.
B. Z may form lather after boiling.
C. W can form scales in kettles.
D. Z wastes soap when washing.
Date posted: July 30, 2019. Answers (1)
- Which of the following practices LEAST pollutes the soil? (Solved)
Which of the following practices LEAST pollutes the soil?
A. Spraying crops to kill pests.
B. Burning plant wastes in the farm.
C. Disposing of animal wastes in the farm.
D. Burying plastics in the soil.
Date posted: July 30, 2019. Answers (1)
- The diagram below represents a simple electric circuit.
Which of the following energy transformations would take place when the switch is on?(Solved)
The diagram below represents a simple electric circuit.
Which of the following energy transformations would take place when the switch is on?
A. Chemical—> electrical—>heat—> light.
B. Electrical—> chemical-alight——> heat.
C. Chemical—> electrical—> light—> heat.
D. Electrical—> light—>chemical—> heat.
Date posted: July 30, 2019. Answers (1)