Q: Answer the following question given this paragraph: Avian Respiration Birds have evolved a respiratory system that enables them to fly. Flying is a high-energy process and requires a lot of oxygen. Furthermore, many birds fly in high altitudes where the concentration of oxygen in low. How did birds evolve a respiratory system that is so unique? Decades of research by paleontologists have shown that birds evolved from therapods, meat-eating dinosaurs (Figure 39.14). In fact, fossil evidence shows that meat-eating dinosaurs that lived more than 100 million years ago had a similar flow-through respiratory system with lungs and air sacs. Archaeopteryx and Xiaotingia, for example, were flying dinosaurs and are believed to be early precursors of birds. 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: Answer the following question given this paragraph: An air mass is a large body of air that has about the same conditions throughout. For example, an air mass might have cold dry air. Another air mass might have warm moist air. The conditions in an air mass depend on where the air mass formed. Q: What is the term used for a large body of air of the same temperature and moisture conditions? A:
A:
output: air mass

Answer the following question given this paragraph: Standardized measurements make it possible for people everywhere to get the same amount of something. Note the red and white labels on the gas pump above. These labels certify that the gas pump has been checked and is pumping an accurate gallon of gas. Standard measurements 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. 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: Answer the following question given this paragraph: 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

Answer the following question given this paragraph: Making Connections: Absolute Zero What is absolute zero? Absolute zero is the temperature at which all molecular motion has ceased. The concept of absolute zero arises from the behavior of gases. Figure 13.9 shows how the pressure of gases at a constant volume decreases as temperature decreases. Various scientists have noted that the pressures of gases extrapolate to zero at the same temperature, 273.15C . This extrapolation implies that there is a lowest temperature. This temperature is called absolute zero. Today we know that most gases first liquefy and then freeze, and it is not actually possible to reach absolute zero. The numerical value of absolute zero temperature is 273.15C or 0 K. Q: The temperature at which all molecular motion has ceased is called what? A:
****
A: absolute zero

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

Answer the following question given this paragraph: All organisms must adapt to their environment in order to survive. This is true whether they live in water or on land. Most environments are not as extreme as the deep ocean where tube worms live. But they all have conditions that require adaptations. In this chapter, you will read about a wide variety of environments and the organisms that live in them. Q: All organisms must adapt to what in order to survive? A:
****
A:
environment