Answer:
The heart is a pump, usually beating about 60 to 100 times per minute. With each heartbeat, the heart sends blood throughout our bodies, carrying oxygen ... It sends out an electrical signal to start the contracting (pumping) of the heart muscle.
Explanation:
To contract and churn the food to break it down into smaller molecules
<span>The person needs to be wearing a dosimeter badge. This is used as a way of measuring the overall radiation that has collected upon the person in the nuclear environment. While the badge does not actually protect against the radiation, it does give the wearer information about whether or not they are in a potentially unsafe situation.</span>
Answer:
evolution
Explanation:
For example, scientists believe that monkeys have evolved to become humans.
This clearly has happened over many millions of years.
Monkeys look really different from humans (don't you think!?).
This was just a random example that came to my head.
Hope this helps.
-Gumina
