Adenine which is a purine base, always pairs with the pyrimidine Thymine in DNA and Uracil(also a pyrimidine) in RNA. The bond which is present between the two bases is a double hydrogen bond.
Guanine which is also a purine base, always pairs with the pyrimidine Cytosine, in the case of both, DNA and RNA. The bond which is present between the two bases is a triple hydrogen bond and hence, is stronger than the A-G double bond.
Answer: C. competition for nest sites between beetles and owls
Answer: Estrogen, beside FSH and LH, causes a girl's body to develop and plans her for pregnancy. So that's what's truly happening amid adolescence it's all these unused chemicals moving around interior your body, turning you from a adolescent into an grown-up with grown-up levels of hormones.
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