Molecular clocks use rates of mutation to measure evolutionary time.Mutations add up at a fairly constant rate in the DNA of species that evolved from a common ancestor. The more mutations that happened in each lineage, the greater is the differences between these lineages.
Answer:
cnidaria
Explanation:
the group contains jellyfish which fit that exact description tentacles that sting you with a burning sensation if your skin comes in contact with them
Macrominerals and trace minerals.
Answer:
pelagic zone they
Explanation:
there are little to no nutrients to be used in these 5 biomes where as benthic zones have a surplus of nutrients in the sediment and soil under the sea
