Answer:
Columbian Exchange
Explanation:
I looked up definitions and information on all the option words, Columbian Exchange seems to be a fit for the answer.
(2) They stimulate uncontrolled cell division is your answer. This causes cancer, specifically for lungs, lung cancer.
The five major attributes of populations that help ecologists predict population growth or decline are -
1. Population size- This describes the total population in the area. It helps to ascertain if there is any need for population protection or any need for breeding.
2. Population density- It determines that large organisms live in less populated density places whereas it is easy to find groups and mates in a high populated places.
3. Population distribution- A population may have a uniform, random, or clumped distribution pattern
4. Sex ratio- It depicts the number of males to number of females. This will determine if the population will increase or decrease in the near future.
5. Age structure- defines the relative numbers of organisms in each age group. This indicates whether population will grow or shrink overtime.
I think that the correct answer is reactants of photosynthesis.