Complex molecules are made up of other elements bonded with carbon. Carbon is able to bond with other molecules so easily because it has four valence electrons.
deforestation- making room for new buildings by clearing trees and forests
pollution- from factories, litter, and bad hygiene
Answer:
they will lose their energy and die
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Answer:
DNA is made up of molecules called nucleotides each nucleotides contains a phosphate group a sugar group and nitrogen base
Answer:
i dont understand pls be more clear
Explanation:
- l
l
- l
- l
- k
- k
- k
k
j
j
j
h
h
h
g
g
g
g
1
1
1
2
2
2
2
3
3
33
3
