How would a rapid increase in emigration affect a country's population growth rate? select one: a. keep it relatively stable. b. cause an increase in growth rate. c. cause a decrease in growth rate. d. cause a sharp increase and then a decrease in the growth rate.

Which best describes a benefit of using dna technology in medicine? a) medicine can be produced in mass quantities. b) medicine can be distributed at a reduced cost. c) medicines have fewer side effects. d) medicines are resistant to antibiotics.

Which statement describes characteristics of planarians? a they live in oceans, are parasites, and reproduce only sexually. b they live in fresh water, are parasites, and reproduce only asexually. c they live in oceans, are free living, and reproduce sexually and asexually. d they live in fresh water, are free living, and reproduce sexually and asexually.

What is any method of measuring the age of an object or event in years, such as using atomic half-life?