Ok so let me help you with this: Desertification is the process in which an environment becomes drier in climate, typically causing plant and animal life to decrease significantly. Researchers have found that areas around current deserts are becoming desertified, therefore expanding the desert.<span> Areas that may have once had adequate rain may now not receive much rain at all, causing desertification. I know this is going to be useful</span>
Answer: The sympathetic division can be thought of in a general way as helping the body to mount a “fight or flight” response, with an overall increase in heart rate and blood pressure. Pressure increases because blood vessels constrict under sympathetic stimulation.
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One way to calculate a simple biodiversity index is by dividing the species richness by the species evenness. Take it outside! Try this methodology in your backyard or a local park to measure the biodiversity of organisms.