Answer:
D.
Explanation:
The immune system lowers the chances of bacteria, viruses, and diseases entering your body
Modern Prokaryotes are sing celled organisms without complex organelles.
Hope I helped :-)
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Answer:
sinoatrial node and atrioventricular node
<span> the answer is progesterone
hopes this helps
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Answer:
it may be erosion, I'm not quite sure but it could possibly be a form of erosion.
