Two of the nitrogen bases are called purines. These two are larger than the two called pyrimidines. The two purines are: A. Adedine and Guanine B. Thymine and Cytosine C. Adenine and Cytosine D. Cytosine and Guanine

Explain how organisms could be harmed by high levels of salt from roadways?

If 360 joules of work are needed to move and create a distance of 4 m what is the weight of the crate

Earths energy sources include both renewable and nonrenewable resources. name at least three sources of energy that could be used in your house. then describe the ideal energy source for generating most of your homes electricity, and explain why you chose that source. can someone give me some ideas, i’m kinda confused.