Q: What is a layer of saturated porous rock? Choices: - a shear - an overhang - a quarry - an aquifer A:
an aquifer

Q: What system, which includes the skin, plays important roles in protection, sensing stimuli and thermoregulation? Choices: - digestive system - pectins system - teleporters system - integumentary system A:
integumentary system

Q: Q: Which water from the equator mixes with cold water from the poles? Choices: - spring water - hot - ice water - warm A:
A: warm

Question: Q: What is the scientific term for the dropping of leaves, fruits, and flowers, which led to the naming of an acid thought to play a role in the process? Choices: - ascorbition - affixation - ablation - abscission A:
Answer: abscission

*Question*
Q: Algae are like plants mainly because they contain what? Choices: - organelles - cells - cell wall - chloroplasts A:
**Answer**
chloroplasts

(Q).
Q: What are the mineral deposits that fill in underground cracks called? Choices: - cores - currents - motherlode - veins A:
(A).
veins