Answer:
d. Layers of rock are lined up.
Explanation:
True. In biology, evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection.
Answer:
If the petri plates are kept open for the longer duration of time then there are chances of cross contamination.
The contamination can be defined as growth of undesired microbes in the petri dishes or tubes which is no longer useful for the experiment.
The tube if kept open will develop the growth of contaminants in it. It can be cross contamination as well.
To avoid contamination the tubes and dishes should not be kept open for a longer duration of time.
Explanation:
The embryonic stage is the third to the eighth week after fertilization. that should be the ansewr
Mobility is not a characteristic of a plant. They are multicellular eukaryotes that have chloroplasts.
