Answer:
B ( ) ao tipo de solo no deserto
Explanation:
just b
Using the principle of faunal succession, if an unidentified fossil is found in the same rock layer as an index fossil, the two species must have existed during the same period of time (Figure 4). If the same index fossil is found in different areas, the strata in each area were likely deposited at the same time.
Food chain. Think of a food chain as a series of links side by side, and a food web as a large spider web connecting at multiple points.
Rough er= Rough endoplasmic reticulum ,has ribosomes on the surface ,<span>membranes that contain ribosomes and helps to make proteins </span>
Smooth er= Smooth endoplasmic reticulum,no ribosomes on surface
