WILL MARK BRAINLIEST Hypothesis: If snails are present, then they will release carbon dioxide which the Elodea will take in.

What is the control to test this hypothesis?

A: Elodea plants in the dark

B: Elodea plants in the light

C: bromthymol blue without plants or snails

ONLY ONE ANSWER CAN BE CHOSE

In attempt to solve the working problems created by the industrial revolution, the united states and many countries in europe considered and/or adopted

Hemoglobin is the compound in red blood cells that carries oxygen to the body. the distribution of hemoglobin in women in g/dl of blood is approximately normally distributed with mean 14 and standard deviation 1. too little hemoglobin, and you're anemic. 2. too much, and (unless you live at high altitudes), you can have other problems.

During the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.