Answer:
Answer D
Explanation:
improved water habitats for human recreation
Answer:
A lake that is drying up due to shifts in river flow
Explanation:
Nucleotides is the answer: they have a phosphate group, a deoxyribose sugar, and a nitrogenous base.
Explanation:
If the concentration of molecules outside the cell is very high relative to the internal cell concentration, the rate of diffusion will also be high. If the internal and external concentrations are similar (low concentration gradient) the rate of diffusion will be low.