Which do guard cells control?

a. movement through xylem

b. movement through phloem

c. the size of the stomata

d. the rate of food production?

Which is a advantage of water's heat capacity?

Why do organisms reproduce

Which of the following would most likely happen if a new primary consumer was introduced to the ecosystem?

Explain how malaria and sickle cell anemia are selection pressures that stabilize the sickle cell allele frequency in a population

Identify the characteristics of a virus. Check all that apply. measures 20-300 nanometers grows and reproduces infects all forms of living cells contains a cell membrane does not respond to stimuli contains DNA or RNA, not both

Compare and contrast an exothermic chemical reaction and an exothermic solution formation by dissociation

What creates the bond between the sodium and chlorine ions

Hag fish have a mostly cartilaginous skeleton. How do they get enough force to tear flesh from the grey whale carcass?

Are viruses alive? Support your answer using at least five of the emergent properties of life. Your answer should include the property of life, how a virus satisfies or does not satisfy that property (for each of the five properties), and your

3 benifits of gene sequencing