Q: Q: Birds have evolved a respiratory system that enables them to fly. flying is a high-energy process and requires a lot of this? A:

OPTIONS:
- weight
- nitrogen
- adaptation
- oxygen

A: oxygen

input: OPTIONS:
- air group
- sky mass
- air pool
- air mass Now, answer this question: Q: What is the term used for a large body of air of the same temperature and moisture conditions? A:
A:
output: air mass

Q: What in science are very important so that we can compare experimental data from one lab to another and make sure we all are talking about the same thing? A:

OPTIONS:
- Conventional measurements
- available measurements
- uses measurements
- standard measurements

Answer: standard measurements

Problem: OPTIONS:
- never
- at night
- during respiration
- at every crossover
Q: Q: When do end portions of two nonsister chromatids trade places? A:
Answer: at every crossover

Problem:OPTIONS:
- 0 degrees kelvin
- stopping point
- 0 degrees celcius
- absolute zero

Q: The temperature at which all molecular motion has ceased is called what? A:
****
A: absolute zero

Problem:OPTIONS:
- natural
- weather
- conditions
- environment

Q: All organisms must adapt to what in order to survive? A:
****
A:
environment