You have an elodea sprig in a test tube containing brothothymol blue then you watch it for several days at what time will the oxygen level in the tube be the lowest?
A. Just before sunset
B. Midnight
C. Just before sunrise
D. Mid-afternoon

Notice how they put future which of the clouds shown would indicate a possible future rain storm? a) b) c) d)

Which one of the following represents the reduced forms of the two major electron carriers? nadh and fadh2 nad+ and fadh2 nad+ and fad nadh and fad

The bubbles in a carbonated soft drink are produced when carbonic acid decomposes to form carbon dioxide and water. in a closed system, this equilibrium exists as why does a carbonated soft drink lose carbonation when the container is left open? a. water evaporates, which favors the formation of h2co3. b. pressure decreases, which favors the formation of h2co3. c. the open container warms up, which causes more gas to escape. d. co2is removed, which favors the formation of h2co3.