The answer is ( In the early stages the embryos of four different species will look the same .For example, fish embryos and human embryos both have gill slits. In fish they develop into gills, but in humans they disappear before birth. That what makes them different.)
Answer:
C
Explanation:
The cell membrane is the layer surrounding the cell. This is like a barrier.
D. The microscope. It is now the workhouse of biology
Answer:. whether or not the organisms thrive in extreme conditions
Explanation: i took the class
Answer:
it becomes clear that the bulk of DNA can be isolated from the nuclear fraction, The Three Roles of DNA are G, C, and T. Figure 2-1 shows the structures of the four nucleotides in DNA. There are two with pyrim-idine bases) that are the fundamental building blocks of DNA.
Explanation:
