Please help! No random answers, please :) Explain how you classified the defenses as specific or nonspecific. What criteria did you use?

What best explains the inability for life to exist in earth early atmosphere

The is an estimate of the fewest number of organisms a population needs to avoid extinction. this measurement will most if the number of offspring each female in the population produces increases. if the population's this measurement will most likely increase. 1 population density, minimum viable population, carrying capacity 2 decrease, be unaffected, increase 3 death rate increase, dead rate decrease

18. which statement about cancer is true?