Q: Milk is usually subjected to what process, where high temperatures denature the proteins in bacteria so they cannot carry out functions needed to grow and multiply? Choices: - vaporization - Cleaning - crystallization - pasteurization A:
pasteurization

Q: What is made of gases that are essential for photosynthesis and other life activities? Choices: - air - ocean - stratosphere - atmosphere A:
atmosphere

Q: Q: Science is the process of knowing about the natural universe through observation and this? Choices: - Test - variation - experimental - experiment A:
A: experiment

Question: Q: What is the sum of the masses of the atoms in a molecule? Choices: - compound mass - mass effect - atomic energy - molecular mass A:
Answer: molecular mass

*Question*
Q: What is the layer of ground below the surface that is always frozen, even in the summer? Choices: - tundra - bedrock - upper crust - permafrost A:
**Answer**
permafrost

(Question)
Q: What is the common name for the midpoint between high and low tide? Choices: - middle level - clouds level - floods level - sea level A:
(Answer)
sea level