A) sinoatrial node, atrioventricular node, atrioventricular bundle, bundle branches, Purkinje fibers.
Answer:
sedimentary rock
Explanation:
Sedimentary rock preserves almost all fossils. Sedimentary rocks such as mudstone, shale, and limestone are likely to contain fossils.
Answer:
They are located in the ribosomes.
A natural resource that is limited in supply