These fossils are very useful for us because we can use them to date the layers of rock that they are found in. Fossils that can be used in this way are called index fossils, and rock layers with the same index fossils in them can be correlated. Not my answer, link here for full
http://peter-mulroy.squarespace.com/correlating-rock-layers/
Answer:
Mitochondria
Explanation:
Protein synthesis can also occur in the mitochondria of the cell since mitochondria contains its own ribosomes and DNA (mDNA)
Answer:
False
Explanation:
Mass of Particle: Heavier particles will move more slowly and so will have a slower rate of diffusion. Smaller particles on the other hand will diffuse faster because they can move faster.
I'm not to sure, sorry. If you can explain the question more clearly I can try to help
Any substance that triggers an immune response is an antigen(s).
