Which photosynthetic process can occur at night? a. the calvin cycle b. the reaction at photosystem iic. the reaction at photosystem id. the formation of nadph

The answer should be A. The Calvin Cycle.

The correct answer is -

A. The Calvin cycle.

Explanation:

Calvin cycle ) is the second phase of photosynthesis (process by which food in the form of glucose is formed in green plants and algae) that is independent of light as it does not require sunlight to take place.

Thus, this phase is also called dark reaction.

During this reaction, the products of first stage (which is a light dependent phase) that are ATP and NADPH are used in the fixation of carbon dioxide so as to form glucose, which is a carbohydrate.

answer; a muscle cell, another neuron and a of the above

a fossil fuel is a fuel formed by natural processes, such as anaerobic decomposition of buried dead organisms, containing energy originating in ancient photosynthesis.[1] the age of the organisms and their resulting fossil fuels is typically millions of years, and sometimes exceeds 650 million years.[2] fossil fuels contain high percentages of carbon and include petroleum, coal, and natural gas.[3] other commonly used derivatives include kerosene and propane. fossil fuels range from volatile materials with low carbon to hydrogen ratios like methane, to liquids like petroleum, to nonvolatile materials composed of almost pure carbon, like anthracite coal. methane can be found in hydrocarbon fields either alone, associated with oil, or in the form of methane clathrates.

the theory that fossil fuels formed from the fossilized remains of dead plants by exposure to heat and pressure in the earth's crust over millions of years was first introduced by andreas libavius "in his 1597 alchemia [alchymia]" and later by mikhail lomonosov "as early as 1757 and certainly by 1763".[4] the first use of the term "fossil fuel" was by the german chemist caspar neumann, in english translation in 1759.[5]

in 2017 the world's primary energy sources consisted of petroleum (34%), coal (28%), natural gas (23%), amounting to an 85% share for fossil fuels in primary energy consumption in the world.[6] non-fossil sources in 2006 included nuclear (8.5%), hydroelectric (6.3%), and others (geothermal, solar, tidal, wind, wood, waste) amounting to 0.9%.[7] world energy consumption was growing at about 2.3% per year. in 2015 about 18% of worldwide consumption was from renewable sources.[8]