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The applied nitrates may seep into water sources from the fields at times of rainfall. Here, they increase the nitrate concentration in the water, leading to an algal bloom. This layer of surface algae bl...

Basic level answer

Description of some form of geographical separation leading to isolated populations

Referencing reduced interbreeding and the development of differences b...

Glucose

Oxygen

They defend the body against diseases by producing antibodies

I would look at what starch is, what process is happening and how does it happen: Starch molecules are carbohydrates composed of sugar monomers of carbon, hydrogen and oxygen, a single sugar molecule is c...