What AP class is that? I guess I have the answer in a paper!! But I don't remember which class is that
Answer:
1.Only recently have scientists been able to measure the amount of CO₂ in the atmosphere and how quickly the rate is increasing. Up until 1950 the levels of atmospheric CO2 were pretty steady at 300-‐310 ppm (that's parts per million out of all the molecules in the air).
2.Levels of carbon dioxide in the atmosphere rise and fall each year as plants, through photosynthesis and respiration, take up the gas in spring and summer, and release it in fall and winter. Now the range of that cycle is expanding as more carbon dioxide is emitted from burning fossil fuels and other human activities.
Explanation:
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Answer:
B. 2
Explanation:
From the graph we get
(1). for
(2). for
(3). for
Now let us take the anti derivative of the second function, and we get
for
We find from the condition :
Thus we have
.
Now we find the anti derivative of the first function, and get
What we note now is that the function is continuous because the derivative of the functions is defined at and at .
since the function are continuous,
Thus we have
Now we can easily evaluate
Which is choice B.
More than others firm because the build the company name already
According to the Mohs scale of mineral hardness, your fingernail has a hardness of about 2.5, a copper penny of about 5.0, and a steel knife blade of about 6.5.(hope this helps!)