Cattle husbandry is done for the following purposes:
$(i)$ Milk production
$(ii)$ Agricultural work
$(iii)$ Meat production
$(iv)$ Egg production

Anil's father was getting late for a function which he had to attend with his family. He started driving very fast and very close to the vehicle in front of theirs. Anil told his father that he should not do so as in case of any emergency,an accident could occur. He explained this to his father in detail. His father got convinced and started driving within the permissible limit and maintained a good gap between his car and the vehicle ahead of him.
$(a)$ What might Anil have explained to his father to convince him?
$(b)$ What are the values shown by Anil?

"Excessive use of chemicals such as insecticides and pesticides causes a threat to ecology." Explain with reason.

Kavita,the science teacher,was teaching her students about the types of diseases based on duration: acute and chronic diseases. She also discussed their ability to spread in public and their immediate causes.
$(a)$ What are acute and chronic diseases? Give one example of each.
$(b)$ Name the type of diseases which spread by coming in contact with a sick person. Name the different types of organisms which cause diseases.

How is mariculture different from aquaculture?

Preventive and control measures adopted for the storage of grains include