Answer:
Stress
Explanation:
Environmental stressing agent such as starvation or exposure to toxic chemicals may cause the Phage Lambda to excise and enter the lytic cycle.
for instance in humans, the somatic cells include 46 chromosomes which is the diploid wide variety (2n) and each sperm and egg has 23 chromosomes wherein one of them is the sex chromosome.
Extinction of species reduces the number of different species in ecosystems, hence lowering the diversity of living things.
The theory of evolution would be the correct answer.
I hoped this helped!
