Solve the differential equation.(3×2 + 6xy2) dx + (6x2y + 4y2)dy = 0

 Organisms that spend their entire life cycle as plankton are called ____.

If you placed a drop of pond water on a slide with no cover, you would have trouble focusing on organisms in the water. This is because your microscope has a low ______

  The leading country that harvests the most commercial marine catch is (the) ____.

Find an integrating factor to make the differential equation exact.  (There are two integrating factors that will work – you must choose both of them.) ydx – xdy = 0

 Where in the ocean is oxygen most plentiful?

  An example of a nonextractive resource provided by the ocean is ____.

Solve the following Cauchy-Euler equation. x2y” – xy’ + y = 0

Determine if the given differential equation is exact.2y dy + 2x dx = 0

 The method of desalination in which seawater is forced against a semipermeable membrane at high pressure is called ____.