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

 In the gill of a fish, water and blood circulate ____, which ____ transfer efficiency.

 The effects of pollution on habitats hit ____ the most.

Change the index of summation to run between 0 and 2 rather than from 1 to 3.

Solve the given differential equation. (The form of yp is given.) + 6 + 5y = -4 + ex (Let yp = A + Bex.)

Solve the differential equation. = 6x5sec y

  Second to petroleum and natural gas, the most profitable physical resource recovered from the marine environment is ____.

Find the particular solution to the given differential equation that satisfies the given conditions.y” – 4 y’ + 4y = 0; y’ = 1 and y = 4 when x = 0

 Scientists can observe primary productivity in the ocean from space by measuring the ____.

 When the concentrations of dissolved substances in water on either side of a cell membrane are the same, the situation is described as being ____.