How many different proteins, each composed of 8 amino acids, can be constructed using the 20 different amino acids found in proteins?

If birth rates fall below the replacement level, then a country is in which stage of demographic transition? a. urbanization/industrialization b. mature industrial c. postindustrial d. pre-modern

Which ability demonstrates that one can identify and share another person’s feelings a. resilience b. confidence c. integrity d. empathy

Ava has an important exam coming up for which she feels unprepared. what is the best way for ava to relieve her stress about the exam? question 17 options: indulge in a little more coffee than usual to increase her concentration on the day of the exam. limit her time spent thinking about the exam and focus on leisure activities. spend extra time relaxing, sleeping, and watching television in the days leading up to the exam. manage her time by setting up a study schedule for the week prior to the exam.