The answer is D. This is caused from photosynthesis.
The iris controls the amount of light entering the eye.
Answer:
Classification of organisms is done while considering many factors such as:
Cell type- whether the organism is prokaryotic or eukaryotic
Cell structure- This includes both the presence and composition of the cell wall
Body type- whether the organism is multicellular or unicellular
Mode of nutrition- the method through which the organism achieves its nutritional requirement, by consuming other organisms (heterotroph) or making its own food (autotroph)
1. all of them
2. cork and wax
3. iron, lead, and aluminum
4. none of them
