This statement is false. If a factor is controlled and set to three levels, then it is clearly of interest to the researcher.
(Verified to be the correct answer through answering this question on my Statistics homework)
Eco1: 1, 4
Eco2: 2, 3, 5
Eco3: 6
Answer:
Permafrost is ground that continuously remains below 0°C for two or more years, located on land or under the ocean. Permafrost does not have to be the first layer that is on the ground. It can be from an inch to several miles deep under the Earth's surface.
Explanation:
Answer:
C. cell membranes
Explanation:
the black/dark material that is visible in many of these onion cells is cell membranes.
