Cell membranes are made of

According to research ,

are made of glycerophospholipids, molecules composed of glycerol, a phosphate group, and two fatty acid chains.

Glycerol is a three-carbon molecule that functions as the backbone of these membrane lipids.

Explanation:

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

i hope this

x would be the most and the least would be y because there are more fruit   and seeds than flock z has insects