Problem: OPTIONS:
- sulfur
- carbon monoxide
- oxygen
- methane
Q: Answer the following question given this paragraph: The burner on a gas stove burns with a pretty blue flame like the one pictured in the opening image. The fuel burned by most gas stoves is natural gas, which consists mainly of methane. Methane is a compound that contains only carbon and hydrogen. Like many other compounds that consist of just these two elements, methane is used for fuel because it burns very easily. Methane is an example of a covalent compound. Q: Natural gas, such as those burned by gas stoves, is composed mostly of this? A:
Answer: methane

Problem:OPTIONS:
- circulatory system
- circulatory system
- adrenal system
- nervous system

Answer the following question given this paragraph: Figure 12.6 Somatic, Autonomic, and Enteric Structures of the Nervous System Somatic structures include the spinal nerves, both motor and sensory fibers, as well as the sensory ganglia (posterior root ganglia and cranial nerve ganglia). Autonomic structures are found in the nerves also, but include the sympathetic and parasympathetic ganglia. The enteric nervous system includes the nervous tissue within the organs of the digestive tract. Q: Somatic, autonomic, and enteric structures are part of what system? A:
****
A: nervous system

Answer the following question given this paragraph: The most useful quantity for counting particles is the mole. So if each coefficient is multiplied by a mole, the balanced chemical equation tells us that 1 mole of nitrogen reacts with 3 moles of hydrogen to produce 2 moles of ammonia. This is the conventional way to interpret any balanced chemical equation. Q: What is the most useful quantity for counting particles? A:
OPTIONS:
- the coefficient
- the periodic table
- the vector
- the mole
the mole

Answer the following question given this paragraph: Plant Responses to Light Plants have a number of sophisticated uses for light that go far beyond their ability to photosynthesize low-molecularweight sugars using only carbon dioxide, light, and water. Photomorphogenesis is the growth and development of plants in response to light. It allows plants to optimize their use of light and space. Photoperiodism is the ability to use light to track time. Plants can tell the time of day and time of year by sensing and using various wavelengths of sunlight. Phototropism is a directional response that allows plants to grow towards, or even away from, light. The sensing of light in the environment is important to plants; it can be crucial for competition and survival. The response of plants to light is mediated by different photoreceptors, which are comprised of a protein covalently bonded to a lightabsorbing pigment called a chromophore. Together, the two are called a chromoprotein. Q: Plants can tell the time of day and time of year by sensing and using various wavelengths of what A:
OPTIONS:
- moisture
- lunar cycles
- precipitation
- sunlight

Answer: sunlight

Question: Answer the following question given this paragraph: Gene transcription is controlled by regulatory proteins that bind to regulatory elements on DNA. The proteins usually either activate or repress transcription. Q: What is controlled by regulatory proteins that bind to regulatory elements on dna? A:
OPTIONS:
- amino acids
- mRNA
- substance transcription
- gene transcription
Answer: gene transcription

input: OPTIONS:
- isolation
- evaporation
- conduction
- oxidation Now, answer this question: Answer the following question given this paragraph: Oxides As with the halides, the nature of bonding in oxides of the transition elements is determined by the oxidation state of the metal. Oxides with low oxidation states tend to be more ionic, whereas those with higher oxidation states are more covalent. These variations in bonding are because the electronegativities of the elements are not fixed values. The electronegativity of an element increases with increasing oxidation state. Transition metals in low oxidation states have lower electronegativity values than oxygen; therefore, these metal oxides are ionic. Transition metals in very high oxidation states have electronegativity values close to that of oxygen, which leads to these oxides being covalent. The oxides of the first transition series can be prepared by heating the metals in air. These oxides are Sc2O3, TiO2, V2O5, Cr2O3, Mn3O4, Fe3O4, Co3O4, NiO, and CuO. Alternatively, these oxides and other oxides (with the metals in different oxidation states) can be produced by heating the corresponding hydroxides, carbonates, or oxalates in an inert atmosphere. Iron(II) oxide can be prepared by heating iron(II) oxalate, and cobalt(II) oxide is produced by heating cobalt(II) hydroxide:. Q: The electronegativity of an element increases with increasing of what state? A:
A:
output:
oxidation