input: OPTIONS:
- the cloud cover
- the dioxide
- the wind cycle
- the atmosphere Now, answer this question: Q: What is a thin layer of gas that surrounds earth called? A:
A:
output: the atmosphere

Q: What describes a close and long-term interaction between different species? A:

OPTIONS:
- endosymbiosis
- dermatitis
- parasitic
- symbiosis

Answer: symbiosis

Problem: OPTIONS:
- Friction
- Magnetic force
- Tension
- gravity
Q: Q: The force that pulls objects toward the earth is what? A:
Answer: gravity

Problem:OPTIONS:
- abnormal
- benign
- toxic
- malignant

Q: Characterized by uncontrolled growth, cancerous cells are also called what? A:
****
A: malignant

Q: What involuntary muscle is found only in the heart? A:
OPTIONS:
- physiological muscle
- respiratory muscle
- digestive muscle
- cardiac muscle
cardiac muscle

Q: Exposure to toxins is most damaging during weeks 4 through 8 of the embryonic stage due to development of what during this period? A:
OPTIONS:
- samples
- faith
- pain
- organs

Answer:
organs