Nitrogen fixation a. is the process where nitrogen is converted to a usable form b. is accomplished by plants when they break down soil c. occurs as a result of photosynthesis d. none of the above

The answer is option B.

Explanation:

A procedure in which nitrogen gas from the climate is joined into the tissue of specific plants. Just a select gathering of plants can get N along these lines, with the assistance of soil microorganisms.Nitrogen obsession is led by an assortment of microscopic organisms, both as free-living life forms and in harmonious relationship with plants. Since it is the vital wellspring of the nitrogen in the dirt, nitrogen that plants need to develop, nitrogen obsession is a standout among the most critical biochemical procedures on Earth.

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?

estuaries are the partially enclosed coastal bodies of brackish water formed at the mouth of sea where river meets an ocean. it is a transition zone between river and sea water so estuaries are influenced to both marine environment such as tides, waves and to riverine such as flow of fresh water and sediments. the mixing of sea and fresh water provide high level of nutrients, making estuaries a high product habitats.

many estuaries suffers degradation from a variety of human activities like erosion from deforestation, overgrazing, overfishing, drainage and eutrophication.

so from the above statement answers will be

1. false as estuaries are formed due to both brackish and freshwater.

2.true, due to high productivity estuaries are breeding ground for many marine species.

3. direct and indirect activities of man that contribute to pollution and deposition of sediments.