*Question*
Q: What's the most common disorder from having an extra chromosome? Read this paragraph and choose the correct option from the provided answers: One common example of an extra-chromosome disorder is Down syndrome ( Figure below ). Children with Down syndrome are mentally disabled and also have physical deformities. Down syndrome occurs when a baby receives an extra chromosome 21 from one of his or her parents. Usually, a child will receive one chromosome 21 from the mother and one chromosome 21 from the father. In an individual with Down syndrome, however, there are three copies of chromosome 21 ( Figure below ). Therefore, Down syndrome is also known as Trisomy 21. These people have 47 total chromosomes. Choices: - Williams syndrome - Turner syndrome - cri-du-chat syndrome - down syndrome A:
**Answer**
down syndrome

*Question*
Q: Name the plant considered to be the ancestor of plants? Read this paragraph and choose the correct option from the provided answers: The ancestor of plants is green algae. This picture shows a close up of algae on the beach. Choices: - brown algae - ferns - grass - green algae A:
**Answer**
green algae

*Question*
Q: What creates wet and dry zones at different latitudes? Read this paragraph and choose the correct option from the provided answers: Temperature falls from the equator to the poles. Global air currents create wet and dry zones at different latitudes. They also create global winds. Choices: - jet stream - trade winds - horse latitudes - global air currents A:
**Answer**
global air currents

*Question*
Q: When additional water is added to an aqueous solution, what happens to the concentration of that solution? Read this paragraph and choose the correct option from the provided answers: When additional water is added to an aqueous solution, the concentration of that solution decreases. This is because the number of moles of the solute does not change, while the volume of the solution increases. We can set up an equality between the moles of the solute before the dilution (1) and the moles of the solute after the dilution (2). Choices: - doubles - no change - increases - decreases A:
**Answer**
decreases