Why is the death of predators more natural then death by starvation

What will happen if two of the base pairs of the stand of the dna are switched

The part of the eye that closes and opens to let light in is .

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.