A. Bacteria are single-celled.
I think it would be this because humans have way more than one cell, and the other ones are the same as us.
Just guessing
Nails,barrier, and waste products
DNA isn't really copied, it's more so split into 2 parts.
DNA is split into 2 parts during mitosis, more exactly the 5th stage called anaphase. chromosomes, which hold DNA< are split into 2 (genetically identical) groups, and each respective group goes to one spindle or another, readying for the last phase of mitosis and eventually cytokinesis.
EVOLUTION
Evolution is considered as the change of characteristics of a species over several generations and depends on the process of natural selection. This is based on the idea that species change gradually over time. This can also rely on the genetic variation which can affect the physical characters of the species. Evidences of this biological processes and changes are proved by geological explorations and researches. Some of evidences proved that other organisms has an advantage over the others.
Alternative energy sources are those that do not deplete natural resources and do not harm the environment.
Options A, B, and C are all fossil fuels, which we know can be depleted and harm the environment.
The only valid option here is D, Geothermal energy.
Geothermal energy is both renewable and environmentally friendly.
