Answer the following question given this paragraph: Rougher surfaces have more friction between them than smoother surfaces. That's why we put sand on icy sidewalks and roads. The blades of skates are much smoother than the soles of shoes. That's why you can't slide as far across ice with shoes as you can with skates (see Figure below ). The rougher surface of shoes causes more friction and slows you down. Heavier objects also have more friction because they press together with greater force. Did you ever try to push boxes or furniture across the floor? It's harder to overcome friction between heavier objects and the floor than it is between lighter objects and the floor. Q: What force is greater on rougher surfaces than smooth surfaces? A:
OPTIONS:
- tension
- acceleration
- gravity
- friction

Answer: friction

Question: Answer the following question given this paragraph: Why does it snow instead of rain? Air temperature determines which type of precipitation falls. Rain falls if the air temperature is above freezing (0 C or 32 F). Frozen precipitation falls if the air or ground is below freezing. Frozen precipitation may fall as snow, sleet, or freezing rain. You can see how the different types form in Figure below . Q: What determines which type of precipitation falls? A:
OPTIONS:
- air pressure
- air currents
- ground temperature
- air temperature
Answer: air temperature

input with options: Answer the following question given this paragraph: Flatworms do not have a respiratory system. Instead, they have pores that allow oxygen to enter through their body. Oxygen enters the pores by diffusion. Q: By what process does oxygen enter the pores of flatworms? A:
OPTIONS:
- absorption
- filtration
- permeation
- diffusion
output: diffusion

Q: Answer the following question given this paragraph: Q: Sepals, petals, stamens, and carpels are what kind of organs? A:

OPTIONS:
- animal
- reproductive
- marine
- floral

A: floral

input: OPTIONS:
- mirror
- kaleidoscope
- microscope
- telescope Now, answer this question: Answer the following question given this paragraph: Nebulae can be spotted with the naked eye or simple telescopes. Q: What is one method to observe nebulae? A:
A:
output: telescope

Question: Answer the following question given this paragraph: Food allergies are like other allergies. They occur when the immune system reacts to harmless substances as though they were harmful. Almost ten percent of children have food allergies. Some of the foods most likely to cause allergies are shown below ( Figure below ). Q: The reaction of which body system causes food allergies? A:
OPTIONS:
- cardiac system
- lymphatic system
- nervous system
- immune system
Answer:
immune system