Scientists theorize that impacts from comets caused proteins to form DNA. true or false, and justification for why?

When explaining dominant and recessive traits to a younger family member, they respond, "well chances are i can probably taste ptc, since dominant traits are more common." how might you address this misconception?

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring

How and why organisms are hierarchically classifies