Problem: OPTIONS:
- an photon
- isotope
- neutrino
- an ion
Q: Answer the following question given this paragraph:   Atoms cannot only gain extra electrons. They can also lose electrons. In either case, they become ions . Ions are atoms that have a positive or negative charge because they have unequal numbers of protons and electrons. If atoms lose electrons, they become positive ions, or cations. If atoms gain electrons, they become negative ions, or anions. Consider the example of fluorine (see Figure below ). A fluorine atom has nine protons and nine electrons, so it is electrically neutral. If a fluorine atom gains an electron, it becomes a fluoride ion with an electric charge of -1.   Q: What's the name for an atom that has gained or lost an electron?   A:
Answer: an ion

Problem:OPTIONS:
- motion
- sunlight
- erosion
- precipitation

Answer the following question given this paragraph:   Selective precipitation can also be used in qualitative analysis. In this method, reagents are added to an unknown chemical mixture in order to induce precipitation. Certain reagents cause specific ions to precipitate out; therefore, the addition of the reagent can be used to determine whether the ion is present in the solution.   Q: In qualitative analysis, reagents are added to an unknown chemical mixture in order to induce what?   A:
****
A: precipitation

Answer the following question given this paragraph:   One idea is that evolution happens. Evolution is a change in the inherited traits of organisms over time. Living things have changed as descendants diverged from common ancestors in the past.   Q: What is defined as a change in the inherited traits of organisms over time?   A:
OPTIONS:
- variation
- divergence
- generation
- evolution
evolution

Answer the following question given this paragraph:   Chromosomal Alterations. Chromosomal alterations are major changes in the genetic material.   Q: What term is used to describe major changes in the genetic material?   A:
OPTIONS:
- generational alterations
- eukaryotic alterations
- mutational alterations
- chromosomal alterations

Answer: chromosomal alterations

Question: Answer the following question given this paragraph:   The surface seismic waves do the most damage because they only travel along the surface of the ground.   Q: What type of seismic waves do the most damage?   A:
OPTIONS:
- gravity
- sunlight
- tension
- surface
Answer: surface

input: OPTIONS:
- conjuration
- interconnection
- specmutation
- coevolution Now, answer this question: Answer the following question given this paragraph:   Coevolution occurs when species evolve together. This often happens in species that have symbiotic relationships. Examples include flowering plants and their pollinators.   Q: What is the term for species evolving together?   A:
A:
output:
coevolution