Which option accurately describes the first two stages of photosynthesis?

stage 1: a chlorophyll electron enters the stroma. stage 2: atp becomes adp and nadph becomes nadp+.

stage 1: the thylakoid captures light energy. stage 2: chlorophyll converts it to chemical energy.

stage 1: the thylakoid membrane of a granum captures light energy. stage 2: water and oxygen provide an excited electron as an energy source.

stage 1: light energy causes an electron to enter an excited state. stage 2: adp becomes atp and nadp+ becomes nadph.

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.

the sun's light combined with the visible wavelenghts form what is called ultraviolet radiation, which are the long waves at the end of a visible light sprectrum.

hope it ,

bioteacher101