Sexual reproduction
a. increased genetic variation.
b. maintained the same gene combinations over time.
c. maintain a slow rate of evolutionary change.
d. limited the material in which natural selection can act upon.

The pronunciation aid that determines the stress placed upon a syllable is the

Describe the two types of vascular tissue

Which statement correctly describes other ways in which nebulae and stars are different? a. a star always has a higher density than a nebula. b. stars can form inside a nebula but a nebula can never be produced by any star. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star. reset submit