Here are your answers:
1. Paleontologist use the technique called "relative dating" which is when scientist compare rocks to determine the age. So if you have a rock which has a similar surface to another rock you could determine the age of that rock. You could also use the technique called the "radiometric dating" by measuring the amount of isotopes in the rock.
2. You can determine the age of a rock by "looking how rough or smooth the rocks are"... so lets say you fine a rock that has many points, sides, and rough edges which means the rock is actually pretty young so it was recently created and most likely a sedimentary rock, but if you find a rock that has smooth sides and no rough edges which would mean the rock is pretty old rocks could go up to thousands of years old and if a rock is that smooth it could be up too a million years old.
Hope this helps!
They fly around to find their prey because "you can catch flies with honey, but you can catch more honeys being fly".
Answer:
A. Obtaining nutrients and getting rid of waste
Answer:
structure; function
Explanation:
Cells are the fundamental unit of life. The plasma membrane consist of both lipids and protein. The main structure of the membrane is the phospholipid bilayer. the plasma membrane controls the movement of various molecules such as water, ion, amino acids, sugar into and outside the cell. The surface area of the membrane also regulates the exchange of membrane between the cell and its surroundings.
Your answer !flow directly from the atrium into the ventricle
