Problem: OPTIONS:
- farming
- glycolysis
- fracking
- photosynthesis
Q: Answer the following question given this paragraph: Photosynthesis provides over 99 percent of the energy for life on earth. A much smaller group of autotrophs - mostly bacteria in dark or low-oxygen environments - produce food using the chemical energy stored in inorganic molecules such as hydrogen sulfide, ammonia, or methane. While photosynthesis transforms light energy to chemical energy, this alternate method of making food transfers chemical energy from inorganic to organic molecules. It is therefore called chemosynthesis , and is characteristic of the tubeworms shown in Figure below . Some of the most recently discovered chemosynthetic bacteria inhabit deep ocean hot water vents or "black smokers. " There, they use the energy in gases from the Earth's interior to produce food for a variety of unique heterotrophs: giant tube worms, blind shrimp, giant white crabs, and armored snails. Some scientists think that chemosynthesis may support life below the surface of Mars, Jupiter's moon, Europa, and other planets as well. Ecosystems based on chemosynthesis may seem rare and exotic, but they too illustrate the absolute dependence of heterotrophs on autotrophs for food. Q: What process provides over 99 percent of the energy for life on earth? A:
Answer: photosynthesis

Problem:OPTIONS:
- gel
- gas
- liqued
- solid

Answer the following question given this paragraph: 6. Butter is a fat that is a solid at room temperature. What type of fatty acids does butter contain? How do you know?. Q: In what state of matter is butter at room temperature? A:
****
A: solid

Answer the following question given this paragraph: When an alkene is acquired by an alkyl halide during an organic reaction. An example of elimination reaction. Q: Whan an alkene is aquired by an alkyl halide in an organic reaction, what kind of reaction is this? A:
OPTIONS:
- migration
- subtraction
- extinction
- elimination
elimination

Answer the following question given this paragraph: The term evolution describes the changes that occur in populations of living organisms over time. Describing these changes does not address the origin of life. The two are commonly and mistakenly confused. Biological evolution likewise says nothing about cosmology, the Big Bang, or where the universe, galaxy, solar system, or Earth came from. Q: What process refers to the changes that occur in populations of living organisms over time? A:
OPTIONS:
- spontaneous mutation
- adaptation
- variation
- evolution

Answer: evolution

Question: Answer the following question given this paragraph: Q: What type of matter often sinks into cracks between rocks? A:
OPTIONS:
- algae
- vapor
- energy
- liquid
Answer: liquid

input: OPTIONS:
- reversable reaction
- catalyst reaction
- isotope reaction
- redox reaction Now, answer this question: Answer the following question given this paragraph: a reductant or an oxidant; it is also a Lewis base. The other reactant (Cl2) is an oxidant, so we expect a redox reaction to occur in which the carbon of CO is further oxidized. Because Cl2 is a two-electron oxidant and the carbon atom of CO can be oxidized by two electrons to the +4 oxidation state, the product is phosgene (Cl2C=O). Unlike Cl2, BF3 is not a good oxidant, even though it contains boron in its highest oxidation state (+3). Nor can BF3 behave like a reductant. Like any other species with only six valence electrons, however, it is certainly a Lewis acid. Hence an acidbase reaction is the most likely alternative, especially because we know that CO can use the lone pair of electrons on carbon to act as a Lewis base. The most probable reaction is therefore the formation of a Lewis acidbase adduct. Typically, both reactants behave like reductants. Unless one of them can also behave like an oxidant, no reaction will occur. We know that Sr is an active metal because it lies far to the left in the periodic table and that it is more electropositive than carbon. Carbon is a nonmetal with a significantly higher electronegativity; it is therefore more likely to accept electrons in a redox reaction. We conclude, therefore, that Sr will be oxidized, and C will be reduced. Carbon forms ionic carbides with active metals, so the reaction will produce a species formally containing either C4 or C22. Those that contain C4 usually involve small, highly charged metal ions, so Sr2+ will produce the acetylide (SrC2) instead. Exercise. Q: Carbon is a nonmetal with a significantly higher electronegativity; it is therefore more likely to accept electrons in what kind of reaction? A:
A:
output:
redox reaction