A. in DNA can result in dysfunctional protein productiona. Your answer is Point mutation
I can help with the first one and third for you.
Symbol | atomic # | Mass of # | # of Protons | # of electrons | # of neutrons
Na | 11 | 23 (when rounded) | 11 | 11 | 12
Sr | 38 | 88 (when rounded) | 38 | 38 | 50
(sorry if this didn't help)
Mitosis I think is the answer
I believe the answer is B. They were no longer able to acquire the necessary characteristics for survival in a changing environment. I think it is B. because trilobites mostly went extinct because of the event that wiped out 95% of Earth's species. So they didn't have the characteristics to survive. Hope I helped!
<span>The outermost layer of the brain, the cerebral cortex, is housed in the cerebrum.</span>
