C is the proper answer. They have been reduced by using unleaded gasoline because lead can harm the air and water we breathe, so using less of it will help reduce the pollution being caused by it.
Answer:
divergent, black, football, tacos
Explanation:
Answer:
AAATT - TTTAA
CGCAT - GCGTA
GGGAC - CCCTG
ACGGT - TGCCA
Explanation:
In DNA, A and T, also known as adenine and thymine pair together and G and C, also known as guanine and cytosine pair together due to the hydrogen bonds formed between the two bases.
