The greenhouse gases carbon dioxide, methane and nitrous oxide, which are harmful to the environment in agricultural activities, are produced during the manufacture of ______ fertilizer.

Answer the following questions by selecting the most appropriate options.

Which of the following statements are correct?

I. Rearing and maintaining fish culture in ponds is known as pisciculture.

II. Keeping and rearing of silkworms is known as sericulture.

III. Care and management of honey bees on a large scale is known as apiculture.

IV. The practice of selective breeding and raising livestock is called animal husbandry.

Select the correct statements about beekeeping. 

I. January to March is the best time to start beekeeping.

II. Honeybees are attracted to the Lichi flowers.

III. Boxes are needed for keeping bees and storing honey produced by them.

IV. Sugar is purchased to make syrup for honeybees.

Which of the statements given above are correct ?

Which of the following facts about animals is incorrect?

Select correct statements about wool:

A. Pashmina wool is obtained from the sheep of Kashmir

B. Some Himalayan regions, United Kingdom, Scotland and Austria are famous wool-producing areas.

C. Wool is long fibre hair and is a protein.

D. Wool is chemically related to meat, while cotton is related to starch and sugar.

Study the following statements.

A. Livestock animals are often attacked by bacterial and viral diseases.

B. Anthrax is a bacterial disease of cattle.

C. Endoparasitic worms an infected animal.

D. The process of eliminating an economical breed of livestock is known as weeding.

E. Heading means proper management and care of livestock.

Which of the following statements are correct about livestock?

Select the correct statements about beekeeping :

I. January to March is the best time to start beekeeping.

II. Honeybees are attracted to the Lichi flowers.

III. Boxes are needed for keeping bees and storing honey produced by them.

IV. Sugar is purchased to make syrup for honeybees.

Which of the statements given above are correct?

Which of the following statements about tadpoles are correct?

I. Tadpoles are fish-like structures that do not have lungs.

II. Tadpoles lose their tails during their metamorphosis into lungs.

III. Tadpoles are amphibians just like frogs and can survive both on land and in water.

IV. Tadpoles emerge from frog eggs that are found in water in small clusters known as spawns.

Select the correct statement about snakes:

A. Only four types of poisonous snakes found in our country.

B. Cobra is a poisonous variety of snakes.

C. A poisonous snake has four hollow teeth (fangs) through which the poison enters the body of a person when the snakes bite.

D. Medicine for snake bites is made form the snake's poison.

Select the correct statements about bee-keeping:

I. January to March is the best time to start beekeeping.

II. Honey Bees are attracted to the Lichi flowers.

III. Boxes are needed for keeping bees and storing honey produced by them.

IV. Sugar is purchased to make syrup for honeybees.

Select the correct statements from the following:

I. Animals that have outside ears and hair on their body give birth to young ones.

II. Animals that do not have outside ears and hair on their body lay eggs.

III. Animals that do not have outside ears and hair on their body give birth to young ones.

IV. Animals that have outside ears and hair on their body lay eggs.