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Svetllana [295]
3 years ago
10

Help me with 1-2 pleasee!!!! (you can also help with 3 if u want but k)

Social Studies
1 answer:
fenix001 [56]3 years ago
6 0
1. the advantages ate that you have a food supply any a way to get around some disadvantages however are that I'm storms it can flood etc

2. early settelers traveled by water because it was faster because there were no cars so you could only travel as you could run on foot or on horseback

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<em>The speaker's official role is to moderate debate, make rulings on procedure, announce the results of votes, and the like. The speaker decides who may speak and has the powers to discipline members who break the procedures of the chamber or house.</em>

Explanation:

<h3>I hope this helps!!</h3>
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How does water's role in photosynthesis explain
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At a fundamental level, water provides electrons to replace those removed from chlorophyll in photosystem II. Also, water produces oxygen as well as reduces NADP to NADPH (required in the Calvin cycle) by liberating H+ ions

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Water acts as a reducing agent by providing H+ ions that convert NADP to NADPH. Since NADPH is an important reducing agent present in chloroplasts, its production results in a deficit of electrons, resulting from oxidation of chlorophyll. This loss of electron must be fulfilled by electrons from some other reducing agent. Photosystem II involves the first few steps of the Z-scheme (the diagram of the electron transport chain in photosynthesis) and therefore a reducing agent that can donate electrons is required to oxidize chlorophyll, which is provided by water (acting as a source of electrons in green plants and cynobacteria). Hydrogen ions thus released create a chemical potential (chemiosmotic) across the membrane that finally results in synthesis of ATP. Photosystem II is the primary known enzyme that acts as catalyst in this oxidation of water.

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