A mutation is one form of genetic variation.
I think it would be D a pure substance
Answer:
Mold fossils A fossilized impression made in the substrate; a negative image of the organism.
Cast fossils Formed when a mold is filled in.
Trace fossils or Ichnofossils Fossilized nests, gastroliths, burrows, footprints, etc.
True form fossils Fossils of the actual animal or animal part.
The most consistent way to obtain information about the evolution of species is to look at the fossil record. Another is to observe the differences between species currently on earth. Another is to use carbon dating.
Answer:
C. These antibiotics interfere with protein synthesis within eukaryotic mitochondria.
Explanation:
Eukaryotic mitochondria have 70s ribosomes and is made up of 50s and 30s subunits which has similarities to the ribosomes of bacterial cells. This likeness
at times causes antibiotics that ought to be toxic to bacterial ribosomes to cause some toxicity in eukaryotic cells instead.
