The best approach for Tyler is a controlled experiment if he wants to directly observe the outcome.
A controlled experiment is designed to minimize the effects of the variables other than the independent variable. A controlled experiment allows reliable results because he can do the experiment specific to the problem and variables involved.
The answer is Angiosperm.
Hope this helps. - M
In this question in which is the major source then of free oxygen in the earth's Proterozoic atmosphere is being produce by the evaporation of the ocean water. Hope this answer would be of big help to this assignment then.
The formula for cellular respiration is...
Gluecose + Oxygen = H20 + Co2 + Energy
I really hope this helps!!
(please put as brainliest if you can!!)
