Pressure is at the bottom a black hole is kind of like a vacuum think about an air look it uses pressure
Blood stream.
Once they enter that wound, it can be infected because germs ended up in the blood stream.
The equipment that the arson investigator used is ultraviolet
fluorescence. The mechanism in this Ultraviolet Fluorescence in which UV
radiation excites chemicals in object and causes them to release visible light.
Arson investigator is a part detective and part fire scientist.
Answer: We don't know what species are needed for survival.
basically he is stating that biodiversity is important because animals depend on other animals as a food source. so when their diet dies off, they will also die or adapt to their environment to prey on a diff food source.