correlation and causation: Many students do not understand the fundamental difference between correlation and causation. In this lab, stomata density variation likely results from interacting ...

An increasing number of researchers are keen to study plant stomata and figure out ways to manipulate them and develop hardier crops.

Plants know how to do a neat trick. Through photosynthesis, they use sunlight and carbon dioxide to make food, belching out the oxygen that we breathe as a byproduct. This evolutionary innovation is ...