Which natural cycle is affected the most by the use of fertilizers? a. oxygen cycle b. water cycle c. carbon cycle d. nitrogen cycle

The theories on the expansion of galaxies maybe re-examined to strengthen science should not be tested to strengthen science will weaken scientific knowledge if they change will become laws if they don't change

Where can dna be found in a prokaryotic cell

When the cell concentrates potassium within, against the natural tendency of matter, it is performing a. passive diffusion b. facilitated diffusion c. active transport d. pinocytosis