Understanding photosynthetic processes can increase food yield. In Ontario, a number of fresh vegetables are grown all year in greenhouses. This allows the grower to control the conditions of the plants. Identify at least 3 abiotic factors that can be controlled and the impact of each. Finally, describe how a grower could affect each factor

littering streams           is the answer

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.

tissue

explanation:

it is actually formed by geoup of cells which is tissue