Problem: OPTIONS:
- physiology
- physics
- chemistry
- biotechnology
Q: Q: What branch of science holds hope for developing crops with genes that help them withstand harsh conditions? A:
Answer: biotechnology

Problem:OPTIONS:
- oil rain
- ozone rain
- dioxide rain
- acid rain

Q: Calcium hydroxide and calcium carbonate are effective in neutralizing the effects of what on lakes? A:
****
A: acid rain

Q: Where are feces formed? A:
OPTIONS:
- duodenum
- liver
- small intestine
- large intestine
large intestine

Q: A notochord has in common with what vertbrate structure? A:
OPTIONS:
- trichord
- rib cage
- rip chord
- spinal cord

Answer: spinal cord

Question: Q: The scale that is used to measure the loudness of sound measures their loudness in what? A:
OPTIONS:
- waves
- weight
- centimeters
- decibels
Answer: decibels

input: OPTIONS:
- .175 million years
- .416 million years
- 20 million years
- 320 million years Now, answer this question: Q: How many years ago did early amniotes diverge into two groups? A:
A:
output:
320 million years