What are the food requirements of dairy animals?

In winter, in the industrialised and metro cities, especially in the morning hours, the visibility is greatly lowered due to the formation of a dark fog, generally resulting in serious road accidents. It also causes suffocation.
$(a)$ What does this indicate and also name this phenomenon?
$(b)$ How is this phenomenon produced? Name two gases which cause acid rain.

Why is organic matter important for crop production?

What is pasturage and how is it related to honey production?

While making shikanjwi,Savy was aware of which substances to use,added sugar,salt,and water in different amounts,and mixed them thoroughly. She was amazed as it tasted the same throughout.
$(a)$ According to you,what qualities are possessed by Savy?
$(b)$ Why do you think shikanjwi tastes the same throughout?

Poultry fowl are susceptible to the following pathogens: