Question

11. If an atom has a half-life of 300 years, how old would the fossil be if it contained one half of the original atom? *
900 years
600 years
300 years
150 years
12. If the rate of extinction for a particular organism is greater than the rate of speciation, then the organism will *
continue to exist.
become extinct.
evolve into a new species.
None of the above

Answer 1

@oOKawaiiOo

Answer 2

11: 300 years

Answer 3

12: become extinct.

Answer 4

thanks can you help me with the last two?