Q: Which gas is responsible for global warming? Choices: - oxygen - hydrocarbons - ozone - carbon dioxide A:
carbon dioxide

Q: Which gland is located in the sella turcica of the sphenoid bone within the cranial floor? Choices: - mammalian gland - thyroid gland - glucose gland - pituitary gland A:
pituitary gland

Q: Q: The atomic number defines the identity of what? Choices: - atomic reaction - neutralized molecule - periodic table - element A:
A: element

Question: Q: What do you call the metal elements listed below the periodic table? Choices: - rare metals - shift metals - process metals - transition metals A:
Answer: transition metals

*Question*
Q: The rocks that are taken from a mine are full of valuable minerals plus rock that isn't valuable. what is this rock called? Choices: - garbage rock - compost rock - empty rock - waste rock A:
**Answer**
waste rock

(Q).
Q: What is the study of the energy transformations that occur in a collection of matter? Choices: - fluctuations - geophysics - kinetics - thermodynamics A:
(A).
thermodynamics