Lipids are organic macromolecules that serve a variety of purposes. What is the most important role of lipids? A.
to oxygenate blood
B.
to store energy
C.
to build muscles
D.
to metabolize sugar

answer is B. to store energy

Explanation:

lipids store energy

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

relative humidity, temperature and dew point -- are bound together in the mathematical relationship below. relative humidity changes when temperatures change. because warm air can hold more water vapor than cool air, relative humidity falls when the temperature rises if no moisture is added to the air. so i would say a