40 points plez : ) 2. explain how to focus a microscope using the high power lens. include any safety issues you need to be aware of. 3. why is it important to keep a microscope covered when you’re not using it?

2. To focus a microscope using the high power lens you must first in low power center the specimen and make sure it is in focus. Then switch to high power and adjust using the fine adjustment or the smaller knob.

3. It prevents dust from settling on the scope and in the lenses.

a. decomposes use carbon from dead organisms as fuel for cellular respiration, returning carbon dioxide back into the atmosphere.