Biogeology is the study of the interaction between the living and the non-living parts of the environment between the Earth's biosphere and the Earth's Lithosphere. Biogeology deals with the studies about biotic, hydrologic and also terrestrial systems in relation to one another.
Answer:
The correct answer is D) Rate of fermentation.
Explanation:
Carbohydrates are fermented by yeast to form alcohol by alcoholic fermentation.
Now if the effects of different carbohydrate molecules are tested on yeast then the yeast will ferment different sugar molecules at different rate.
As a result the rate of fermentation will be the independent variable of the experiment.
Answer: A buffer is a chemical substance that helps maintain a relatively constant pH in a solution, even in the face of addition of acids or bases. Buffering is important in living systems as a means of maintaining a fairly constant internal environment, also known as homeostasis.
Explanation: I know that because I got it off of goggle