Problem: OPTIONS:
- valleys
- oceans
- plains
- mountains
Q: Answer the following question given this paragraph: Streams often start in mountains, where the land is very steep. You can see an example in Figure below . A mountain stream flows very quickly because of the steep slope. This causes a lot of erosion and very little deposition. The rapidly falling water digs down into the stream bed and makes it deeper. It carves a narrow, V-shaped channel. Q: Where do streams often start? A:
Answer: mountains

Problem:OPTIONS:
- viruses
- protozoa
- amoeba
- bacteria

Answer the following question given this paragraph: Bacteria are surrounded by a cell wall consisting of peptidoglycan . This complex molecule consists of sugars and amino acids. The cell wall is important for protecting bacteria. The cell wall is so important that some antibiotics, such as penicillin, kill bacteria by preventing the cell wall from forming. Q: What are surrounded by a cell wall consisting of peptidoglycan? A:
****
A: bacteria

Answer the following question given this paragraph: Synthetic carbon polymers are produced in labs or factories. Plastics are common examples of synthetic carbon polymers. You are probably familiar with the plastic called polyethylene. All of the plastic items pictured in the Figure below are made of polyethylene. It consists of repeating monomers of ethylene (C 2 H 4 ). Structural formulas for ethylene and polyethylene are also shown in the Figure below . To learn more about synthetic carbon polymers and how they form, go to this URL: http://www. youtube. com/watch?v=7nCfbZwGWK8. Q: Plastics are common examples of synthetic polymers of what abundant element? A:
OPTIONS:
- silver
- silicon
- hydrogen
- carbon
carbon

Answer the following question given this paragraph: Rutherford's atomic model became known as the nuclear model . In the nuclear atom, the protons and neutrons, which comprise nearly all of the mass of the atom, are located in the nucleus at the center of the atom. The electrons are distributed around the nucleus and occupy most of the volume of the atom. It is worth emphasizing just how small the nucleus is compared to the rest of the atom. If we could blow up an atom to be the size of a large professional football stadium, the nucleus would be about the size of a marble. Q: In an atom, what two major types of particles are located in the nucleus? A:
OPTIONS:
- electrons and neutrons
- molecules and neutrons
- ions and electrons
- protons and neutrons

Answer: protons and neutrons

Question: Answer the following question given this paragraph: A catalyst works by providing a lower energy pathway from reactants to products. The use of a catalyst involves intermediate reactions which have lower activation complexes than the original reaction. On a simplified reaction energy diagram, this can be thought of as lowering the activation energy for a given transformation. If the activation energy of a reaction is decreased, more collisions will have enough energy to overcome this lower barrier, so the reactant-to-product transformation will occur more frequently. As a result, the overall reaction rate will be higher than for an identical reaction with a larger activation energy barrier. Q: What works by providing a lower energy pathway from reactants to products? A:
OPTIONS:
- thermodynamics
- hormones
- magnetism
- catalyst
Answer: catalyst

input: OPTIONS:
- oblong
- simple
- vertical
- irregular Now, answer this question: Answer the following question given this paragraph: Galaxies can be spiral, elliptical, or irregular. Q: Galaxies can be spiral, elliptical, or which other type? A:
A:
output:
irregular