Answer: A
Explanation: Cancer is unchecked cell growth. Mutations in genes can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death. As a mass of cancerous cells grows, it can develop into a tumor.
The best explanation is that it occurs because most eukaryotic genes and their RNA transcripts have long non-coding stretches of nucleotides that are not translated.
10% of energy is lost (to heat), for each level of the food chain. So the rabbit would have 500, the snake would have 50 and the hawk would have 5.
