Problem: OPTIONS:
- degree of rna coiling
- type of dna
- number of chromosomes
- degree of dna coiling
Q: Q: What determines the length and thickness of dna chromosomes? A:
Answer: degree of dna coiling

Problem:OPTIONS:
- refuge
- habitats
- ecosystem
- biodiversity

Q: Poetically speaking, nature reserves are islands of what, in a sea of habitat degraded by human activity? A:
****
A: biodiversity

Q: What type of winds are created when more solar energy strikes the equator than the polar regions? A:
OPTIONS:
- arctic winds
- equatorial winds
- domestic winds
- global winds
global winds

Q: On what part of bones would you expect to find cartilage? A:
OPTIONS:
- interior
- marrow
- exterior
- end

Answer: end

Question: Q: What substances, which are distinct from acids and bases, form when ions form ionic bonds? A:
OPTIONS:
- oils
- vitamins
- water molecules
- salts
Answer: salts

input: OPTIONS:
- rapid heart disease
- essential heart disease
- cardiovascular disease
- coronary heart disease Now, answer this question: Q: What is the term for atherosclerosis of arteries that supply the heart muscle? A:
A:
output:
coronary heart disease