The myelin sheath is the layer of fat cells that insulates most axons and speeds up the transmission of nerve impulses.
Answer: Igneous rock forms between sedimentary layers.
This can definitely help in determining relative age because sedimentary rocks will be the older rock than igneous rock as igneous rock has formed between sedimentary rocks
Explanation:
Secondary succession happens more often because it occurs after some kind of distribution that still leaves the soil intact (mudslide,bulldozing,shoveling,or scraping off an area)
They grow much faster and they grow to be larger than normal crops.
