Not all of the human genome codes for proteins. Which of the following characteristics describes about 50 percent of the human genome?
A genes that code for proteins
B sequences that regulate genes that code for proteins
genes that code for RNA molecules
D highly repetitive sequences
E imprinted sequences

answer by yourhope:

answer is

human impact on the environment can be seen in the deterioration of the !

: )

but there is no

i guess you forgot putting it.

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )