1- the grass dies due to lack of food, from lack of photosynthesis from lack of sunlight
2- you danger the enviroment
A chemoorganotroph and a chemolithotroph in the same environment would not compete for - carbon
A chemoorganotroph is an organism that gets its energy from oxidation of reduced organic compounds. A chemolithotroph is someone who is able to use inorganic reduced compounds as a source of their energy. This process is accomplished through oxidation and ATP synthesis.
Pupillary response is a physiological response that varies the size of the pupil, via the optic and oculomotor cranial nerve. Involuntary reflex reaction to exposure or inexposure to light—in low light conditions a dilated pupil lets more light into the eye. :)