input with options: Q: What is part of a cycle that holds an element or water for a long period of time called? A:
OPTIONS:
- homeostasis
- a ditch
- a holding tank
- a reservoir
output: a reservoir

Q: Q: Has the average annual temperature on earth been rising or falling for the past 100 years? A:

OPTIONS:
- unchanged
- fluctuating
- falling
- rising

A: rising

input: OPTIONS:
- overpopulation
- accumulation
- evolution
- extinction Now, answer this question: Q: Warming conditions and, perhaps, human activities contributed to what fate of many organisms of the pleistocene era? A:
A:
output: extinction

Q: What is formed when an element gains one or more electrons? A:

OPTIONS:
- cation
- ion
- neutron
- anion

Answer: anion

Problem: OPTIONS:
- anal
- cervical
- spinal
- thoracic
Q: Q: There is always a slightly negative pressure within what cavity, helping keep the airways of the lungs open? A:
Answer: thoracic

Q: What type of animal in the sea spend most of their lives as medusae? A:

OPTIONS:
- fish
- sharks
- whales
- jellyfish

Answer:
jellyfish