input with options: Q: What organism is characterized by an incomplete digestive system and a single, tentacled opening? A:
OPTIONS:
- annelids
- prokaryotes
- sponges
- cnidarians
output: cnidarians

Q: Q: In which order does the reactivity of halogen group decline? A:

OPTIONS:
- bottom to top
- right to left
- left to right
- top to bottom

A: top to bottom

input: OPTIONS:
- grammaticalization
- redistributions
- macroevolution
- microevolution Now, answer this question: Q: Evolution over a short period of time at the level of the population is called what? A:
A:
output: microevolution

Q: What disease can too little calcium cause? A:

OPTIONS:
- anemia
- arthritis
- psoriasis
- osteoporosis

Answer: osteoporosis

Problem: OPTIONS:
- mass
- density
- color
- ph
Q: Q: The acidity of a solution is typically assessed experimentally by measurement of its what? A:
Answer: ph

Q: What environment do animals with gills live in? A:

OPTIONS:
- air
- underground
- cold
- water

Answer:
water