Will humans and animals be harmed by frequencies outside their hearing range?

Describe five factors that influence the value of fuel

What the theory that the sun goes around earth was replaced with the theory that earth goes around the sun this was an exaple of a

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes