(please answer fast and clear!)

1.) How can evolutionary pressure cause extinction?

2.) When does mass extinction occur, and why?

3.) What significant event in Earth’s history do scientists believe occurred approximately 65 million years ago?

4.) How does iridium, found in clay around the world, provide evidence for this theory?

1) if mother nature pressures a species to evolve they will not evolve right therefore they past on to their offspring and the they die.

2)mass extinction occurs when something BIG happens take dinosaures for ex they were wiped out by something HUGE this was all proving by sci because of the fossils

3) the meteor  (i think)

4) i don't know

Explanation:

sorry if I am wrong for any of these

have a nice day