What is Photosynthesis?

the process by which green plants turn carbon dioxide and water into food using energy from sunlight

Explanation:

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Photosynthesis is the process by which plants, some bacteria, which use the enrgy from sunlight to produce sugar, in which cellular respiration converts into ATP ( enrgy) or known as the " fuel" used by all living things. The conversion of the unusable sunlight energy into usable chemical energy, and is associated the the photosynthetic process of water and releases the oxygen that we most definitely need to stay alive. But also we need the food as well to stay alive too.

The eqaution for photosynthesis is 6CO2 + 6H2O → (sunlight) C6H12O6 + 6O2.

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.