Describe the ways, in terms of chemicals and energy, that we depend on photosynthesis.

Humans need the oxygen made by plants to live. We also make carbon dioxide that plants need for photosynthesis. 5 For humans, it is essential that photosynthesis changes energy from the Sun into chemical energy. Our lives rely on the results of photosynthesis.

The answer is    (d) 7/2======we have    we also  have an integral      notice how function f splits up at x = 0. there's a left piece and a right pieceso we'll need to do the same thing with our integral: split it at x = 0we use a property of integrals that allows us to split up and sum:     notice that for the piecewise function f, the function has the equationf(x) = x when x  ≤ 0. so for the integral  , f(x) = x so it changes into      for the piecewise function f, the function has the equationf(x) = x+1  when x  > 0. for the integral  , we have    therefore, back to our splitted integral:    

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