Q: Answer the following question given this paragraph: Amphibians generally lay large number of eggs. Often, many adults lay eggs in the same place at the same time. This helps to ensure that eggs will be fertilized and at least some of the embryos will survive. Once eggs have been laid, most amphibians are done with their parenting. Q: When does most amphibians' parenting end? A:

OPTIONS:
- after adolescence
- once offspring reach adulthood
- never
- once eggs have been laid

A: once eggs have been laid

input: OPTIONS:
- eruptions
- currents
- earthquakes
- thunderstorms Now, answer this question: Answer the following question given this paragraph: Thunderstorms form when the ground is really hot ( Figure below ). The air near the ground becomes very warm and humid. This is true in some locations in late afternoon or early evening in spring and summer. The warm air rises rapidly, which creates strong updrafts. When the rising air cools, its water vapor condenses. The updrafts create tall cumulonimbus clouds. Winds blow the cloud top sideways. This makes the well-known anvil shape of a cloud known as a thunderhead ( Figure below ). Water droplets and ice fly up through the cloud. When these droplets get heavy enough, they fall. This starts a downdraft. A convection cell develops within the cloud. A mature thunderstorm produces gusty winds, lightning, heavy rain, and hail. Q: What weather phenomenon is caused by strong warm updrafts from heated ground? A:
A:
output: thunderstorms

Answer the following question given this paragraph: where m is the mass of the system. Experiments have shown that acceleration is exactly inversely proportional to mass, just as it is exactly linearly proportional to the net external force. Q: Experiments have shown that acceleration is exactly inversely proportional to mass, just as it is exactly linearly proportional to what? A:

OPTIONS:
- net internal force
- speed
- kinetic energy
- net external force

Answer: net external force

Problem: OPTIONS:
- catabolism
- magnetism
- morphology
- echolocation
Q: Answer the following question given this paragraph: Animals such as bats and dolphins send out ultrasound waves and use their echoes, or reflected waves, to identify the locations of objects they cannot see. This is called echolocation. Animals use echolocation to find prey and avoid running into objects in the dark. You can see in the Figure below and also at the following URL how a bat uses echolocation to find insect prey. http://www. bsos. umd. edu/psyc/batlab/headaimmovies/nsf_challenge/nsf4. wmv. Q: What is the term for the method of sending out ultrasound waves to determine the locations of objects? A:
Answer: echolocation

Problem:OPTIONS:
- conductors
- radiators
- thermal generators
- electric generators

Answer the following question given this paragraph: Two important devices depend on electromagnetic induction: electric generators and electric transformers. Both devices play critical roles in producing and regulating the electric current we depend on in our daily lives. Electric generators use electromagnetic induction to change kinetic energy to electrical energy. They produce electricity in power plants. Electric transformers use electromagnetic induction to change the voltage of electric current. Some transformers increase voltage and other decrease voltage. Q: What type of generators use electromagnetic induction to change kinetic energy to electrical energy? A:
****
A: electric generators

Problem:OPTIONS:
- magnetic bonds
- electron bonds
- bilateral
- multicenter

Answer the following question given this paragraph: Boron forms multicenter bonds rather than metallic lattices with delocalized valence electrons. Why does it prefer this type of bonding? Does this explain why boron behaves like a semiconductor rather than a metal? Explain your answer. Q: What kind of bonds does boron form rather than metallic lattices? A:
****
A:
multicenter