The nature vs. nurture debate strives to determine what factors contribute the most to, or have the most direct impact on, human development. Access to or lack of resources is often one factor under consideration. Which side of the debate believes lack of access to resources contributes to behavioral outcomes?

People who utilizes the progression principle will ensure their exercise program increases in frequency, intensity, time, and type. the changes need to happen gradually in order to ensure they make gains in their fitness program. a person who doesn't utilize the progression principle can still gain health benefits from exercising, but will not continue to improve in cardiovascular fitness.

What happens to the influenza virus every 20-40 years and why?