Swimming alone a. increases the benefits of swimming for cardiorespiratory endurance. b. is acceptable in a pool but never in a lake or an ocean. c. is ok as long as you've been swimming for at least five years. d. is never safe, regardless of ability.

As , plants meet their needs for making food from air, soil, water, and the sun's energy in a process called there are plants called grow high in trees without here are words to put in the blanks. 1.) producers 2.) consumers 3.) chloroplasts 4.) epiphytes

All organisms contribute some water to the water cycle by conducting

Why do some dna fragments move farther than others during gel electrophoresis? a. because their shapes are different b. because they are different types of molecules c. because the samples are different colors d. because their masses are different