Answer:
C.were formed at the same time.
Explanation:
If the same index fossils occurred in two separate rock layers, the two rock layers would probably have been established at the same time. Index fossils aid the characterizing and classify of geologic period.
Which phrase best describes a gene?
(1) a segment of a DNA molecule found only in
the body cells of an organism
(2) a segment of a DNA molecule found only in
the gametes of an organism
(3) a segment of a DNA molecule that contains
the instructions for producing a trait in an
organism
(4) a segment of a DNA molecule that contains
the instructions for producing all the
characteristics of an organism
Answer:the steps of a rock cycle are weathering and erosion, transportation, deposition, compaction and cementation, metamorphism, and rock melting so if its not this its that,s the answer
Answer:each gene in the gene pool exists at a certain rate, or the allele frequency.
Explanation:
