Which of the following is an example of a nonpoint source of freshwater pollution?
pesticide runoff from farm fields
leaking toxic waste landfill
sewage treatment plant
factory waste piped into a stream

How do chloroplasts set plants apart from other living things

Which type of organism is a caterpillar

Molecules like glucose and amino acids are not lipid soluble, so cannot cross the cell membrane by simple diffusion. instead, they are shuttled across by carrier proteins in the membrane from high to low concentration. does this process require energy from the cell? this is an example of what type of molecular movement?