Pollution can come from both natural sources and human activities depending on the type of pollutant.
<h3>What is pollution?</h3>
It is the release of substances into the environment to the extent that the well-being of plants, animals, and humans starts getting affected.
Substances that are released into the environment to the extent that they start affecting the organisms in the environment negatively are known as pollutants.
Pollutants can come from natural sources or as a result of human activities.
For example pollutants such as oxides of sulfur, methane, carbon dioxide, etc. can come from natural processes such as volcanic eruptions, activities of microbes, etc.
Pollutants such as oxides of carbon and sulfur can also be generated as a result of human activities such as the burning of coal, technological inventions, etc.
More on pollution can be found here: brainly.com/question/23857736
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Plants that use crassulacean acid metabolism (CAM)
photosynthesis repair CO2 at night, when their stomata are
open. CAM plants stock the CO2 typically in the method of malic
acid via carboxylation of phosphoenolpyruvate to oxaloacetate, which
is then concentrated to malate. Decarboxylation of malate during the day discharges
CO2 inside the leaves, therefore permitting carbon fixation to
3-phosphoglycerate by RuBisCO.
The hydrosphere makes up all of earths water, and has a secondary sphere called the cryosphere which encompasses all of Earth’s ice. This is important for all living things. Aquatic life lives in water, and land animals drink it to survive.
When an olfactory receptor is stimulated, a generator potential must be produced by the receptor <span>before it signals the brain that a change has occurred.
In order to reach the threshold of the cell, a graded potential must be generated by the neuron of </span><span> the olfactory receptor. At threshold, an action potential will be generated, referred to as the generator potential. The brain then receives this generator potential in order to decode it.</span>
