Q: By what kind of change can a chemical change be reversed? A:
OPTIONS:
- another carbon change
- another thermal change
- another radioactive change
- another chemical change

Answer: another chemical change

Question: Q: What is the name for animals that have a backbone? A:
OPTIONS:
- mammals
- skeletates
- invertebrates
- vertebrates
Answer: vertebrates

input with options: Q: Elongation is the addition of what to the mrna strand? A:
OPTIONS:
- codons
- glycine
- filaments
- nucleotides
output: nucleotides

Q: Q: Pressure is defined as the force per unit area on? A:

OPTIONS:
- weight
- gravity
- speed
- surface

A: surface

input: OPTIONS:
- uterus
- glucose
- Stomach
- placenta Now, answer this question: Q: A yolk sac replaces what structure for nourishing a marsupial embryo? A:
A:
output: placenta

Question: Q: Which organ system defends the body from pathogens and other causes of disease? A:
OPTIONS:
- digestion system
- nervous system
- respiratory system
- immune system
Answer:
immune system