Answer:
they did not use drugs if the researchers could not find any brugs
Explanation:
Answer: An ecosystem is a community of living organisms living with the nonliving components of their environment, interacting as a system. These biotic and abiotic components are linked together through nutrient cycles and energy flows.
Explanation:
I believe the answer is: Glaucoma
Glaucoma is a form of physical disorder that caused by <span> elevated intraocular pressure that damage the optic nerves.
This causes many of people in older generation to dramatically lose the quality of their vision, in some cases it may resulted in Blindness.</span>