Which has the greatest number of mitochondria a blood, epidermal, cardiac, or nerve cell.

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint