Organisms are made up of a bunch of cells. Billions of cells coming together make up an organism.
Answer:
13. is Option J) all of the above
and 14 I'm not completely sure but I think its option D.
Auroras normally occur in the Earth's thermosphere.
Answer:
c)polymerase chain reaction (PCR).
Explanation:
Because the paleontologist recovered only a bit of tissue and it is very old, it is very likely that the DNA in the sample is very small and part of it is degraded. Anyway, the paleontologist must first amplify the DNA sample to obtain many identical copies of the specific region of the DNA they want to compare. the above is done through a polymerase chain reaction (PCR).
D because to help preserve environment everyone has to work together