Ron is writing an essay on the process of photosynthesis. on which of the points should he elaborate? a. it is a natural process where co2 is more soluble in cooler parts of the ocean. b. it is a natural process where the ozone layer protects the earth’s surface from the uv rays of the sun. c. it is a natural process where o2 is absorbed at the surface level of the water bodies. d. it is a chemical process by autotrophs that convert inorganic substances to organic substances. e. it is a chemical process by autotrophs that converts organic substances to inorganic substances.

D. It is a chemical process by autotrophs that convert inorganic substances to organic substances.

Explanation:

Photosynthesis is the process we have been studying since childhood. It is a process in which green plants (Autotrophs) use inorganic material like carbon di oxide (CO2)  and water (H2O) in the presence of sunlight and particular plant pigments chlorophyll convert those inorganic substance into organic substances called sugars. Plants use these sugars to fulfill their energy demands and lots of other organisms including humans get those organic matter from plants to fulfill their energy demands too.

Here is the equation of photosynthesis:

               carbon dioxide + water —> glucose + oxygen + water.

Therefore option D is best answer.

Hope it help!

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.