Describe how the loss of non target organisms leads to even greater pesticide use

"Pesticides are found as common contaminants in soil, air, and water, and on non-target vegetation in our urban landscapes. Once there, they can harm plants and animals ranging from beneficial soil microorganisms and insects, non-target plants, fish, birds, and other wildlife. Table 1 summarizes the harmful effects to non-target organisms of some commonly used urban herbicides."

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Greater use of pesticides destroys the crops and useful organisms.

Explanation:

The loss of non targeted organism leads to increased use of pesticides because the targeted organism will still be there to harm the crops.

Again the pesticide will be used until the targeted organism dies. But there is no guarantee that the target organism will die if they are not targeted.

So, more and more pesticides will be harmful for the crops and other useful insects and pests.

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.