if you find yourself in a lab setting and some papers (that are not supposed to) catch on fire, what should you do first?

a) call 911.

b) check the msds.

c) grab the fire extinguisher.

d) record your experimental data quickly

Which chemical equation is unbalanced? which chemical equation is unbalanced

Match the correct terms to their descriptions a system in which only energy but not matter is exchanged frozen water in snow part of geosphere that includes only soil a thin layer between the troposphere and the stratosphere cryosphere tropopause closed system pedosphere

Which of these internal feedback reactions does not need your brain? oa. your leg jumping when it is hit by a reflex hammer b. your deeper breathing when you need more oxygen c. your body temperature rising when you have an infection d. your heart beating faster when you are in danger