Without staining them you wouldn't be able to see them
The answer is B. A satellite is any object that revolves around another object, whether that be a natural satellite like an asteroid or a man-made object like a radio satellite.
Answer:
Not enough information
Explanation:
You haven't given any reference. However, they are referred to as the building blocks of life because, for example, in Prokaryotic cells, which are unicellular, everything required for them to survive and reproduce is all found within a single cell.
Answer:
by signals that the nervous system sends to the brain
Explanation:
Bronchioles is the answer
