The earliest known domesticated wheat, barley, and rice crops are thought to have originated in asia about years ago.

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:

yes it is   dangerous

explanation:

because that foot is discusting and could get you sick

thinking it would be d not too sure but i think it's right

the answer is: metamorphic rocks often show the presence of fossils, also a

hope i

-lavira: )