Answer:
200 acres because you have on tractor going 20 in 4hours you multiply by five giving you 100 and then times 2 because the hours are doubled
Explanation:
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Four general conditions necessary for natural selection to occur<span> are: A. More organisms are born than can survive. B. Organisms vary in their characteristics, even within a species. D. Differences in reproduction and survival are due to variation among organisms.</span>
Having someone to talk with about your thoughts and issues can help you feel better. Emotional support from someone who cares also helps. This is usually what therapy is for...
Explanation:
Positive feedback occurs to increase the change or output: the result of a reaction is amplified to make it occur more quickly. Negative feedback occurs to reduce the change or output: the result of a reaction is reduced to bring the system back to a stable state.