Answer the following question given this paragraph: Soil formation requires weathering. Where there is less weathering, soils are thinner. However, soluble minerals may be present. Where there is intense weathering, soils may be thick. Minerals and nutrients would have been washed out. Soil development takes a very long time. It may take hundreds or even thousands of years to form the fertile upper layer of soil. Soil scientists estimate that in the very best soil forming conditions, soil forms at a rate of about 1mm/year. In poor conditions, it may take thousands of years!. Q: What slow process is required for formation of soil? A:
OPTIONS:
- leaching
- digestion
- fossilization
- weathering

Answer: weathering

Question: Answer the following question given this paragraph: Q: All living things need air and this to survive? A:
OPTIONS:
- stimuli
- habitat
- ecosystem
- water
Answer: water

input with options: Answer the following question given this paragraph: An esker is a winding ridge of sand deposited by a stream of meltwater. Such streams flow underneath a retreating glacier. Q: What is a winding ridge of sand deposited by a stream of meltwater called? A:
OPTIONS:
- sand dune
- desert
- oasis
- esker
output: esker

Q: Answer the following question given this paragraph: Inorganic chemistry is the study of chemicals that do not, in general, contain carbon. Inorganic chemicals are commonly found in rocks and minerals. One current important area of inorganic chemistry deals with the design and properties of materials involved in energy and information technology. Q: Inorganic chemistry refers to the study of materials *not* containing which element? A:

OPTIONS:
- hydrogen
- helium
- oxygen
- carbon

A: carbon

input: OPTIONS:
- limbic system
- endoderm
- mitochondria
- notochord Now, answer this question: Answer the following question given this paragraph: Another major step in animal evolution was the evolution of a notochord. A notochord is a rigid rod that runs the length of the body. It supports the body and gives it shape (see Figure below ). It also provides a place for muscles to anchor, and counterbalances them when they contract. Animals with a notochord are called chordates. They also have a hollow nerve cord that runs along the top of the body. Gill slits and a tail are two other chordate features. Many modern chordates have some of these structures only as embryos. Q: A major step in animal evolution was the evolution of what rigid rod that runs the length of the body? A:
A:
output: notochord

Question: Answer the following question given this paragraph: All objects in the universe have a gravitational attraction to each other ( Figure below ). The strength of the force of gravity depends on two things. They are the mass of the objects and the distance between them. The greater the objects' mass, the greater the force of attraction. As the distance between the objects increases, the force of attraction decreases. Q: The mass of the objects and the distance between them affect the strength of what universal force? A:
OPTIONS:
- states of matter
- weight
- motion
- gravity
Answer:
gravity