Question

question 1 (1 point)
physical and chemical variables control
survival limits
predation
diversity
species interactions
question 2 (1 point)
which of the following does not regulate population density
community
predation
nutrients
competition

Explanation:

For Question 1: Physical and chemical variables control survival limits of organisms in an environment. For Question 2: A community is a group of different populations, and it is not a direct regulator of population density. Predation, nutrients, and competition can all affect how many individuals are in a given area (population density).

Answer:

Question 1: Survival limits
Question 2: Community