Answer:
C.
Explanation:
Because it's giving a brief description of how it looks and what it's function is, which as listed a seismograph is used to record ground motion such as caused by earthquakes, volcanic eruptions and explosions.
Blood vessels expand during hot weather and retract/ tighten in cold weather
On Earth, we all know gravity affects everything around us. ... There's no gravity to pull blood into the lower part of the body. Instead, blood goes to the chest and head, causing astronauts to have puffy faces and bulging blood vessels in their necks.
