Problem:OPTIONS:
- fluid selection
- subliminal selection
- origin selection
- natural selection

Answer the following question given this paragraph: Natural selection occurs when there are differences in fitness among members of a population. Q: Differences in fitness among different members of a population can lead to what kind of selection? A:
****
A: natural selection

Answer the following question given this paragraph: If the rocks on one or both sides of a fracture move, the fracture is called a fault ( Figure below ). Faults can occur alone or in clusters, creating a fault zone . Earthquakes happen when rocks break and move suddenly. The energy released causes an earthquake. Q: What is it called when multiple faults are located in close proximity to one another? A:
OPTIONS:
- fog zone
- crystal zone
- solid zone
- fault zone
fault zone

Answer the following question given this paragraph: The figure below shows why tides occur ( Figure below ). The main cause of tides is the pull of the Moon's gravity on Earth. The pull is greatest on whatever is closest to the Moon. Although the gravity pulls the land, only the water can move. As a result:. Q: The pull of the moon's gravity on earth is the main cause of what water phenomenon? A:
OPTIONS:
- storms
- floods
- waves
- tides

Answer: tides

Question: Answer the following question given this paragraph: Absolute zero is the temperature where molecular motion stops and is the lowest possible temperature. Q: What is the temperature where molecular motion stops? A:
OPTIONS:
- Absolute Freezing
- Final Zero
- mean zero
- absolute zero
Answer: absolute zero

input with options: Answer the following question given this paragraph: Flatworms reproduce sexually. In most species, the same individuals produce both eggs and sperm. After fertilization occurs, the fertilized eggs pass out of the adult's body and hatch into larvae. There may be several different larval stages. The final larval stage develops into the adult form, and the life cycle repeats. Q: Flatworms reproduce sexually. in most species, the same individuals produce both what? A:
OPTIONS:
- gametes
- heart and sperm
- diploid and haploid
- eggs and sperm
output: eggs and sperm

Problem: OPTIONS:
- Metal
- calcium
- potassium
- magnesium
Q: Answer the following question given this paragraph: low, the two metals with the highest ionization energies (beryllium and magnesium) do form compounds that exhibit some covalent characters. Like the alkali metals, the heavier alkaline earth metals impart color to a flame. As in the case of the alkali metals, this is part of the emission spectrum of these elements. Calcium and strontium produce shades of red, whereas barium produces a green color. Magnesium is a silver-white metal that is malleable and ductile at high temperatures. Passivation decreases the reactivity of magnesium metal. Upon exposure to air, a tightly adhering layer of magnesium oxycarbonate forms on the surface of the metal and inhibits further reaction. (The carbonate comes from the reaction of carbon dioxide in the atmosphere. ) Magnesium is the lightest of the widely used structural metals, which is why most magnesium production is for lightweight alloys. Magnesium (shown in Figure 18.6), calcium, strontium, and barium react with water and air. At room temperature, barium shows the most vigorous reaction. The products of the reaction with water are hydrogen and the metal hydroxide. The formation of hydrogen gas indicates that the heavier alkaline earth metals are better reducing agents (more easily oxidized) than is hydrogen. As expected, these metals react with both acids and nonmetals to form ionic compounds. Unlike most salts of the alkali metals, many of the common salts of the alkaline earth metals are insoluble in water because of the high lattice energies of these compounds, containing a divalent metal ion. Q: Which is the lightest of the widely used structural metals? A:
Answer:
magnesium