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!
The answer is most likely: 'with an abundance of plant life without oxygen in the atmosphere '. The atmosphere contained almost no free oxygen during the Archean. It does not appear as if this epoch had an abundance of plant life, but rather mats of single-celled photosynthesising cyanobacteria. So I am not completely sure that either of the given choices are correct.
Answer:
Mutualism
Explanation:
Definition: symbiosis that is beneficial to both organisms involved.
Answer:
Mitosis is the division of the nucleus, while cytokinesis is the division of the cytoplasm. They are both two stages in the cell cycle.
Explanation:
Water vapor is part of hydrosphere and the atmosphere because they both evaporate when rain falls down so say I’m making boiled eggs and there’s water vapor coming out of the pot that means that the water is evaporating it’s not smoke just so u know I learned this in 5th grade
