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Biology 100- Unit 4 Exam 2025 Questions and Answers Which of the following would cause a population to grow? - ....ANSWER ...-an increase in the birth rate and a decrease in the death rate of a population Which of the following statements describes an example of population growth? ....ANSWER ...-The number of people in a town has increased by 25% in the past 5 years. Scientists observed a population of 50 three-toed sloths over a year. They observed 21 births, 13 deaths, 5 individuals immigrate, and 8 individuals emigrate. What is the population now? What is the rate of population growth in a percentage? It is a/an population. - ....ANSWER ...-55, 10%, open (50+21+5-13-8=55) Imagine that a mountain that supports a population of rare mountain goats suffers a prolonged summer forest fire. This event is likely to _______________ population size, and would be considered a density __________ factor. - ....ANSWER ...-limit, independent Most human populations experience a growth rate best described as ....ANSWER ...-exponential The term _______ describes the interacting populations of different species (e.g., moose and ticks) within an ecosystem. - ....ANSWER ...-community …FOR STUDENTS ONLY…©️2025 ALL RIGHTS RESERVED… 1