Answer:
Science plays a rather large role in the modern world. Without it, devices such as phones, computers, and even TV wouldn't exist. With advances in science, humans have been able to cure many ailments and diseases that were previously incurable.
It is b, increased fertility.
Measured by how well he or she does the job
I'm pretty sure you can do it on both but a child would be safer to do cpr on to me because, on an infant their insides are still really fragile so you don't wanna press to hard :)
<span />
Answer:
c. crust, mantle, outer core, inner core
