Stretching that requires you to hold the position for 20-30 seconds is called
a. pnf stretching
b. static stretching
c. ballistic stretching
d. dynamic stretching

Some plants have reproductive structures that them reproduce using natural forces or animals. how does the reproductive structure shown here ensure the reproductive success of plants?

What is a common risk associated with illegal drugs?

An _ exposure is a repeated or prolonged exposure(over months or years) that may bring about slowly developing symptoms.