Q: The pion can only be created by violating the conservation of what? Choices: - quantum physics - time-space - momentum - mass-energy A:
mass-energy

Q: Which direction from the source do pollutants in an aquifer spread? Choices: - southward - forward - inward - outward A:
outward

Q: Q: What are atoms or groups of atoms called which carry and electrical charge? Choices: - protons - molecules - electrons - ions A:
A: ions

Question: Q: What type of light is composed of many rays having random polarization directions? Choices: - reflected light - polarized light - diffracted light - unpolarized light A:
Answer: unpolarized light

*Question*
Q: The cells of all eukarya have a what? Choices: - chloroplast - epidermis - necrosis - nucleus A:
**Answer**
nucleus

Q: Q: What is the name of the smallest planet in our solar system, which is also nearest to the sun? Choices: - mars - jupitor - earth - mercury A:
A: mercury