Science has no opinions, yet though is usually biased.
Active transport is the movement of molecules or ions against a concentration gradient. Passive transport is the movement of molecules or ions from an area of higher to lower concentration.
Passive transport does NOT require energy
-Diffusion - small uncharged molecules
-Osmosis - water
-Facilitated diffusion - glucose
Active transport REQUIRES energy
-Ion pumps
-Endocytosis
-Exocytosis
Answer:
because it can
Explanation:
there is no need to explain
Density tells you the mass of exactly one unit of volume any given substance.
The answer is C. 13.6
