Answer:
Abuse
Explanation:
I don't know for sure, but it seems like the best option.
I am assuming that since you are in a biology class, you are looking for the answer: cells.
Hope this helps! <3
The right ventricle pumps deoxygenated blood to the lungs.
In a way, yes.
experiments need a hypothesis (this would correspond to "what they already believe") which has to be a specific proposal, not a question (e.g. turtles reproduce sexually)
their experiments proove (or, better said: test!) whether "what they already believe" is true.
Because the rock is laid down over time, the oldest rock (and fossils or whatever) will be in the lowest layer. As you go up, the age decreases - you are looking at younger rocks.
This doesn't tell you the *absolute* age of the rocks - you can't say from this evidence whether they are 100 million or 500 million years old. But you can see changes over history and you can get an ordering in time.
