The milky way has a that contains tens of billions of stars

Suppose you could go back in time to interview henri becquerel on the day he discovered radioactivity. from his perspective, write an account of the discovery.

What is gene flow? apexa: selection for average traits b: when a population splits in twoc: a mutation becoming more commond: genes moving between two populations

Which fossil organism in whale evolution do you think was the first to live mostly in water? explain your claim with evidence and reasoning?