How to be Productive? Kam samay mein jyada results kaise laane hain?

Loss of biodiversity in a region can result in (A) Increased variability in plant productivity, water use, pests and disease cycle. (B) Decline in plant production (C) Lowered resistance to environmental perturbations How many of the above statements are correct

Kya aap jaante hain pani mein namak dalte hi pani ka level kam kyun ho jata hai? :D

Case 1: A chemical equation is the representation of chemical change in terms of symbols and formulae of reactants and products. The substances which react are written on the left hand side of the arrow and are termed as reactants while the substances produced as result of reaction are called products and are written on the right hand side of the arrow. The arrowhead shows the direction of the reaction. A chemical equation in the whcih the number of atoms of each element on reactant side is equal to that on the product side is said to be balanced. How is input of energy represented in chemical equation ?