Answer:
B - Repeating the experiment gives the same results.
Explanation:
For more reliable results in an experiment it must be repeated multiple times to see if the data is accurate.
Hope it helps! :D
Answer:
I think it's C but I might be wrong so I apologize if I am.
When exercising is when the lungs work the hardest because you're using a lot of muscles and are running around and are using force in your body so the lung works really hard to make sure the body gets enough air while working out.
Answer:
The tissues are essential because it represents a level of organisation in living organisms. Tissues also function by transporting nutrients and connects bones and other body parts.
Explanation:
An epoch is longer than an era.
