Valves ensure blood flows toward your heart. Vein valves work to bring the blood that flowed down via arteries back up to your heart.
It should be
A) Potential Energy
As it falls it turns into Kinetic energy.
sensation
Sensation can be defined as
the activation of sensory receptor cells by the stimulus. However, the
processing of the sensory stimuli into a meaningful pattern can refer to as
perception. Thus, not all sensation is usually perceived but perception is
dependent on sensation.
Answer:
cDNA libraries
Explanation:
cDNA libraries represent expressed genes from specific cell types under specific conditions.
