What environmental factors have the greatest effect on determining regions for crop production?

ANSWER:

The environmental factors that affect determination of regions of crop production are terrain, soil, water and climate.

EXPLANATION:

Crops need proper water and climate so that they can grow in the required manner. They also need fertile soil for their growth. The terrain of the land determines the types of crops that can be grown in a region.

For instance, in plains, the soil is fertile and water is easily available for crops. In addition, the climatic conditions of plains allow the growth of crops like rice.  

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.

i dont know it at allnow im just getting points at this pint