Protect yourself by following these steps: Treat all blood and body fluid spills as if they were infectious. When providing first aid or CPR, protect yourself first, then treat the victim second. Wear appropriate personal protective equipment: gloves, goggles, etc. as required by the accident.
Answer:
B. Charged Particles and Ions
The Earth was first considered habitable when we discovered that it was Microbial organisms that started the process. I would go with D.
C. because stimuli is how your body responds to something, and in this case, someone's heart rate increases WHEN their blood oxygen drop. Do you see how it responds? ;-)
The shape of a plant cell is a square, while the shape of an animal cell is circular. Hope this helps! :)
