<p>I am currently a freshman majoring in Ecology and Evolutionary biology. My first two quarters I took the calculus that engineering/math/physics majors take in case I wanted to switch to one of those majors. I am now set on my decision of Ecology and Evolutionary biology though and now I have a decision. So the major I'm in only requires 2 quarters of the math sequence that I took but a third is "recommended".. Am I going to face any roadblocks if I don't take the third quarter in the series? Do grad school require a full year of calculus? If not then I plan on taking Statistics next quarter instead. Thanks you guys for any help, and this is kind of urgent.. I register for classes for next quarter tomorrow.</p>