Question: Q: Plants can tell the time of day and time of year by sensing and using various wavelengths of what A:
OPTIONS:
- moisture
- lunar cycles
- precipitation
- sunlight
Answer: sunlight

Question: Q: What has two chains of nucleotides, one more than rna? A:
OPTIONS:
- gna
- fna
- mna
- dna
Answer: dna

Question: Q: Cigarettes are a major source of what kind of chemical substances linked with cancer? A:
OPTIONS:
- chemicals
- pesticides
- alkaloids
- carcinogens
Answer:
carcinogens