Cells create tissues which create organs which make up systems so i believe the answer is D i hope this helps :)
Needles.
Sharing needles or things that you can eject through your skin (ex. drugs)
Infected tattoo needle that wasn't cleaned and disinfected properly
Continental collision is a variation on the fundamental process of subduction, whereby the subduction zone is destroyed, mountains produced, and two continents sutured together. India is a prime example of this.
Answer:
you didn't ask a question
Explanation:
<span>I think you have repeated the same question
The intrinsic conduction system determines the basic rhythm of the beating heart. It consists of autorhythmic cardiac cells that initiate and distribute impulses (action potentials) throughout the heart which causes the heart to contract and expand which causes the beating or pumping of heart</span>
