Leaf area index
The leaf area index (LAI) is the ratio of total projected leaf area per unit ground area, and is widely used to characterize canopy light conditions.
is that clear
B I think(sorry if you get this wrong)
E. very small atoms
fusion reaction in which two atoms of hydrogen combine together or fuse to form an atom of helium
Answer:
The Lock and Key mechanism refer to the action of enzyme. According to this mechanism as a specific key open a particular lock, similarly one enzyme can perform action on one specific substrate (substance).
