Which is currently the most supported theory about the future of the universe? The universe could remain exactly as it is today.
The universe may continue to expand.
Stars could burn out, causing the universe to become dark and cold.
Gravity could pull galaxies back together, causing a reverse of the big bang.

mostly likely its that the universe may continue to expand

Currently, the most supported theory about the future of the universe is that the universe may continue to expand and as it expands, it will experience a reduction in temperature until the universe becomes too cold to support life. This is known as the Big Chill theory.

Explanation:

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answer; atp and nadph;

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: