Answer the following question given this paragraph: Top: Flickr:LearningLark; Bottom: Laura Guerin (CK-12 Foundation). Amylase and pepsin are used in our digestive system . Top: CC BY 2.0; Bottom: CC BY-NC 3.0. Q: What system of the body uses amylase and pepsin in its functioning? Choices: - respiratory system - circulatory system - hormonal system - digestive system A:
digestive system
Answer the following question given this paragraph: Mars is the easiest planet to observe. As a result, it has been studied more than any other planet besides Earth. People can stand on Earth and observe the planet through a telescope. We have also sent many space probes to Mars. A car-sized robotic rover, Curiosity, arrived on the Red Planet in August 2012. Curiosity joins Opportunity, which has been active since 2004. Q: What planet is the easiest to observe? Choices: - mercury - pluto - uranus - mars A:
mars
Q: Answer the following question given this paragraph: Ocean water normally dissolves some of the carbon dioxide in the atmosphere. The burning of fossil fuels has increased the amount of carbon dioxide in the atmosphere. As a result, ocean water is also dissolving more carbon dioxide. When carbon dioxide dissolves in water, it forms a weak acid. With higher levels of dissolved carbon dioxide in ocean water, the water becomes more acidic. This process is called ocean acidification. Q: What has the burning of fossil fuels increased in the atmosphere? Choices: - ozone - oxygen - temperature - carbon dioxide A:
A: carbon dioxide
Question: Answer the following question given this paragraph: The diversity of living things is called biodiversity. Q: What is the diversity of living things called? Choices: - habitat - adaptation - ecosystem - biodiversity A:
Answer: biodiversity
*Question*
Answer the following question given this paragraph: The thermosphere is the layer above the mesosphere. It rises to 600 kilometers (372 miles) above the surface. The International Space Station and other space stations orbit Earth in this layer. Q: What is the name of the layer above the mesosphere? Choices: - exosphere - lithosphere - intersphere - thermosphere A:
**Answer**
thermosphere
*Question*
Answer the following question given this paragraph: Q: What are modified leaves that bear sporangia? Choices: - spines - neutrophils - sporozoans - sporophylls A:
**Answer**
sporophylls