What are the 3 ways a population's gene pool/genetic variation can be affected? explain

Which of the following will not cause mass extinction? a. drastic change is weather b. geological change c. both a and b d. none of the above

State officials are considering constructing a road through a forested wilderness area. this action will likely affect the forest ecosystem in various ways. part a: predict how the construction of a road could negatively affect plants and animals in that ecosystem. (3 points) part b: describe one way that the construction of a road could have a positive impact of the forest ecosystem. (1 point)

Number and variety of living organisms includes genetic, species, and ecological types