The point on earth's surface directly above an earthquakes focus (hypocenter) is called the epicenter.
Chromosomes are thread-like structures in which DNA is tightly packaged within the nucleus.
<span>USGS is gathering information in the Arctic Ocean to study acidification and identify a baseline of information about the ocean's chemistry. This chemistry is expected to change due to decreases in the amount of summer sea ice.</span>
C. Cells
Cells make up organs, which make up organisms, which make up populations
