All are true about butyrate EXCEPT that butyrate... Gizmo Options (Only choose one)
is a waste product produced by some gut bacteria
helps promote healthy blood vessels
nurishes the intestinal cellls
formation occurs in the small intestine

a, i am pretty sure.

b is the correct answer

all these collisions do one thing, and that thing is explained in the last option. when dusst, rocks and ice collide, they harden and form giant layers of rocks or hard ice.

d)   to harden materials to form different parts of earth’s layers

hope it ,

bioteacher101