Answer the following question given this paragraph: A third important type of soil is laterite . Laterite forms in tropical areas. Temperatures are warm and rain falls every day ( Figure below ). So much rain falls that chemical weathering is intense. All soluble minerals are washed from the soil. Plant nutrients get carried away. There is practically no humus. Laterite soils are often red in color from the iron oxides. If laterites are exposed to the Sun, they bake as hard as a brick. Q: What causes the red color of laterite soils? A:

OPTIONS:
- oxygen
- toxins
- erosion
- iron oxides

Answer: iron oxides

Problem: OPTIONS:
- carbon
- helium
- acid
- water
Q: Answer the following question given this paragraph: A pile of leaves slowly rots in the backyard. In the presence of oxygen, hydrogen can interact to make water. Gold can be stretched into very thin wires. Q: In the presence of oxygen, hydrogen can interact to make what? A:
Answer: water

Problem:OPTIONS:
- skeletal
- nervous
- pulmonary
- circulatory

Answer the following question given this paragraph: Oxygenated blood is transported by the circulatory system from lungs to tissues throughout the body. Q: Oxygenated blood is transported by what system? A:
****
A: circulatory

Answer the following question given this paragraph: Poor air quality started to become a serious problem after the Industrial Revolution. The machines in factories burned coal. This released a lot of pollutants into the air. After 1900, motor vehicles became common. Cars and trucks burn gasoline, which adds greatly to air pollution. Q: During what time period did poor air quality become a problem? A:
OPTIONS:
- Chernobyl disaster
- coal industry boom
- second world war
- industrial revolution
industrial revolution

Answer the following question given this paragraph: Q: When food is scarce, starving cells secrete a molecule that stimulates neighboring cells to do what? A:
OPTIONS:
- compete
- hoard energy
- die off
- aggregate

Answer: aggregate

input with options: Answer the following question given this paragraph: In almost all cases, chemical bonds are formed by interactions of valence electrons in atoms. To facilitate our understanding of how valence electrons interact, a simple way of representing those valence electrons would be useful. A Lewis electron dot diagram (or electron dot diagram or a Lewis diagram or a Lewis structure) is a representation of the valence electrons of an atom that uses dots around the symbol of the element. The number of dots equals the number of valence electrons in the atom. These dots are arranged to the right and left and above and below the symbol, with no more than two dots on a side. (It does not matter what order the positions are used. ) For example, the Lewis electron dot diagram for hydrogen is simply. Q: What is a representation of the valence electrons of an atom that uses dots around the symbol of the element? A:
OPTIONS:
- watson structure
- right structure
- time structure
- lewis structure
output:
lewis structure