0-7 Why is excess use of fertilizers detrimental for environment? Q-8 What is a Genetically Modified Crops (GMCs)? Name any one such crop

Answer of Question 7

Fertilisers are inorganic chemicals which are not easily degraded. Excess use of fertilisers causes environmental pollution as their residual and unused amounts will become pollutants for air, water and soil.

Answer of Question 8

Genetically modified crops are crops produced from organisms that have had specific changes introduced into their DNA using the mmethods of genetic engineering

Example

cotton

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.