Nitrogen occurs in air as N2 which is not readily available to organisms.
Many elements occur in nature in various forms. Not all forms in which elements occur in nature are usable. Some forms in which elements occurs can not be used unless they undergo some kind of extraction and purification process.
Two elements are abundant in nature but not in a readily available/usable form are nitrogen and silicon. Nitrogen occurs in air as N2 which is not readily available to organisms. Silicon abundant in soil and is used in making glass but must be processed before it can be used.
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Based on the mutation rate of the molecular clock, it will take 22.5 million years for one full base pair mutation to occur.
<h3>What is a molecular clock?</h3>
A molecular clock is a biomolecule which is chosen to serve as a clock due to its periodical changes in a regular pattern.
Mutation in genes can serve as molecular clock.
The mutation in the gene of coding for the venom mutates at a rate of 0.76 base pairs every 17.1 million years.
It will take 17.1/0.76 = 22.5 million years for 1 base pair to mutate.
Therefore, it will take 22.5 million years for one full base pair mutation to occur.
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<em>Hello!</em>
<h3>The Answer Is: <em>Bacteria and Archaea are comprised exclusively of microorganisms; plants, mammals, and microorganisms such as fungi and protists are contained in the Eukarya. Because of their lack of a nucleus, the Bacteria and Archaea were grouped together and called Prokaryotes, but the Archaea are more closely connected to the Eukaryotes than to the Bacteria. The cell walls of bacteria contain a compound called peptidoglycan, while the cell walls of archaea do not. Archaea and bacteria also vary because the composition of the cell membranes of archaea is peculiar and does not contain the same lipids, or fats, present in other species' cell membranes.</em></h3>
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Answer:
the answer is C-in areas with different air pressures
Explanation:
Convection occurs when particles with a lot of heat energy in a liquid or gas move and take the place of particles with less heat energy. Heat energy is transferred from hot places to cooler places by convection. Liquids and gases expand when they are heated.