Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

high temperatures, food additives and UV rays.

Explanation:

Factors that can increase mutation rates are high temperatures, food additives and UV rays.

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Factors that can increase mutation rates are UV rays.

Option D

Explanation:

The physical or chemical agent which damages the DNA and creates mutation are UV rays, gamma rays, and x rays. These rays damages the bonds between  the nucleotides specially between the thymine -thymine nucleotides resulting into thymine - thymine dimer. This mutations disrupts the processes like replication or transcription and can be corrected with the help of DNA repair mechanism of the cell.

poor water quality affects most estuarine organisms, including commercially important fish and shellfish. the pollutants that have the greatest impact on the health of estuaries include toxic substances like chemicals and heavy metals, nutrient pollution (or eutrophication), and pathogens such as bacteria or viruses.

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.