Biology, 09.12.2019 21:31 jordynnmarelich1194
Two test tubes are filled with a solution of bromthymol blue. a student exhales through a straw into each tube, and the bromthymol blue turns yellow. an aquatic green plant is placed in each tube, and the tubes are corked. one tube is placed in the dark, and the other tube is placed in direct sunlight. the yellow solution in the tube in sunlight turns blue, while the one in the dark remains yellow. which statement best explains why the solution in the tube placed in sunlight returns to a blue color?
question 11 options:
oxygen was produced by photosynthesis.
oxygen was removed by respiration.
carbon dioxide was removed by photosynthesis.
carbon dioxide was produced by respiration.
Answers: 1
Biology, 21.06.2019 16:00, prettygirllniyiaa
Which of the following examples can cause gene flow between populations? a. an increase in predators to a population of zebra b. a volcanic eruption that kills half of a population of mice c. bird droppings that contain seeds from a different location d. a person that sprays a toxin on a group of mosquitoes
Answers: 2
Biology, 22.06.2019 01:20, claytonashley30
In a cladogram' when does a group of organisms branch off
Answers: 1
Two test tubes are filled with a solution of bromthymol blue. a student exhales through a straw into...
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