The temperature at which half of the dna helical structure is lost is called the:

Need with these questions . need the answers in a rush for these questions are the answers i put down are correct or not? ?

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.

Atype of organism that no longer exist on earth is said to be