C) slate, a metamorphic rock
Scientists currently monitor underground movements, such as earthquakes and nuclear tests, using seismometers – instruments that measure the motion of those events at the Earth's surface.
Answer:
D. Common house spiders need to eat insects to live.
In my Biology Honors Class, they taught about gastric juice, or also known as (p H) which is formed by stomach glands, is very acidic and can seriously mess up enzyme trypsin functions. After all, enzymes are a type of catalyst that help break down food, which means that enzymes are a sort of digestive acid as well. Hope this helps!
