Notchochord, morphology, chordates
Answer:
D. "always" cover the microscope when not in use.
Explanation:
when you are finished using a light microscope or any microscope in general you always need to put the cover back on it. Mostly, to protect it from any harmful bacteria, light etc. and to keep it clean and, from collecting dust.
Transport
The protein is working to transport substances across the membrane.
Red Blood Cells would take up 41% of the blood's overall volume.
