One characteristic of personality traits is that they
a. cannot be classified
b. cannot be defined
c. are fairly stable
d. are unstable

How can you keep track of variables in a science experiment?

The deserts of the sahara and australia are associated with

Which of the following is most important in making the typical seed more resistant to adverse conditions than the typical spore? a) a different type of sporopollenin b) an internal reservoir of liquid water c) integument(s) d) ability to be dispersed e) waxy cuticle