Q: Answer the following question given this paragraph: Currents also flow deep below the surface of the ocean. Deep currents are caused by differences in density at the top and bottom. Density is defined as the amount of mass per unit of volume. More dense water takes up less space than less dense water. It has the same mass but less volume. Water that is more dense sinks. Less dense water rises. What can make water more dense?. Q: Deep ocean currents are caused by differences in what property at the top and bottom? A:

OPTIONS:
- diameter
- mass
- velocity
- density

A: density

input: OPTIONS:
- steel
- zinc
- copper
- iron Now, answer this question: Answer the following question given this paragraph: Refrigerator magnets stick to a refrigerator door because it contains iron. Why won't the magnets stick to wooden cabinet doors?. Q: What do refrigerator magnets contain that make them stick to a refrigerator door? A:
A:
output: iron

Answer the following question given this paragraph: Upon compiling his results for many thousands of plants, Mendel concluded that the characteristics could be divided into expressed and latent traits. He called these dominant and recessive traits, respectively. Dominant traits are those that are inherited unchanged in a hybridization. Recessive traits become latent, or disappear in the offspring of a hybridization. The recessive trait does, however, reappear in the progeny of the hybrid offspring. An example of a dominant trait is the violetcolored flower trait. For this same characteristic (flower color), white-colored flowers are a recessive trait. The fact that the recessive trait reappeared in the F2 generation meant that the traits remained separate (and were not blended) in the plants of the F1 generation. Mendel proposed that this was because the plants possessed two copies of the trait for the flowercolor characteristic, and that each parent transmitted one of their two copies to their offspring, where they came together. Moreover, the physical observation of a dominant trait could mean that the genetic composition of the organism included two dominant versions of the characteristic, or that it included one dominant and one recessive version. Conversely, the observation of a recessive trait meant that the organism lacked any dominant versions of this characteristic. Q: What traits are those that are inherited unchanged in a hybridization? A:

OPTIONS:
- alleles
- mutations
- recessive traits
- dominant traits

Answer: dominant traits

Problem: OPTIONS:
- pounds
- units
- beacons
- rads
Q: Answer the following question given this paragraph: The radiation exposure is determined by the number of rads times the quality factor of the radiation. Q: The radiation exposure is determined by the number of what times the quality factor of the radiation? A:
Answer: rads

Problem:OPTIONS:
- by antibiotic use
- by eating them
- by paralyzing them
- by digesting their cell walls

Answer the following question given this paragraph: Another barrier is the saliva in the mouth, which is rich in lysozymean enzyme that destroys bacteria by digesting their cell walls. The acidic environment of the stomach, which is fatal to many pathogens, is also a barrier. Additionally, the mucus layer of the gastrointestinal tract, respiratory tract, reproductive tract, eyes, ears, and nose traps both microbes and debris, and facilitates their removal. In the case of the upper respiratory tract, ciliated epithelial cells move potentially contaminated mucus upwards to the mouth, where it is then swallowed into the digestive tract, ending up in the harsh acidic environment of the stomach. Considering how often you breathe compared to how often you eat or perform other activities that expose you to pathogens, it is not surprising that multiple barrier mechanisms have evolved to work in concert to protect this vital area. Q: How does lysozyme destroy bacteria? A:
****
A: by digesting their cell walls

Problem:OPTIONS:
- hydrogen
- carbon dioxide
- oxygen
- nitrogen

Answer the following question given this paragraph: Nitrogen is another common element found in living things. It is needed to form both proteins and nucleic acids such as DNA. Nitrogen gas makes up 78 percent of Earth's atmosphere. In the nitrogen cycle, nitrogen flows back and forth between the atmosphere and living things. You can see how it happens in Figure below . Several different types of bacteria play major roles in the cycle. Q: What gas comprises about three-fourths of earth's atmosphere? A:
****
A:
nitrogen