It prevents dust from settling on the scope and in the lenses. Also, if working in a lab, a cover can prevent contamination.
20kg piece of pure gold, i think........
Answer:
The cornea is the only part of a human body that has no blood supply but gets oxygen directly from air
Answer:
Consumer: a person or thing that eats or uses something.
Producer: an organism that produces. (makes) its own food.
Explanation:
Hope that helps buddy :)
Answer:
Since humans possess cranial, abdominal, and thoracic cavities, we are considered COELOMATES.