Answer the following question given this paragraph: Diversifying Selection Sometimes two or more distinct phenotypes can each have their advantages and be selected for by natural selection, while the intermediate phenotypes are, on average, less fit. Known as diversifying selection (Figure 19.8), this is seen in many populations of animals that have multiple male forms. Large, dominant alpha males obtain mates by brute force, while small males can sneak in for furtive copulations with the females in an alpha male's territory. In this case, both the alpha males and the "sneaking" males will be selected for, but medium-sized males, which can't overtake the alpha males and are too big to sneak copulations, are selected against. Diversifying selection can also occur when environmental changes favor individuals on either end of the phenotypic spectrum. Imagine a population of mice living at the beach where there is light-colored sand interspersed with patches of tall grass. In this scenario, light-colored mice that blend in with the sand would be favored, as well as dark-colored mice that can hide in the grass. Medium-colored mice, on the other hand, would not blend in with either the grass or the sand, and would thus be more likely to be eaten by predators. The result of this type of selection is increased genetic variance as the population becomes more diverse. Q: Sometimes two or more distinct phenotypes can each have their advantages and be selected for by natural selection; this is known as what? Choices: - extra selection - multiplying selection - shedding selection - diversifying selection A:
diversifying selection
(Question)
Answer the following question given this paragraph: Electromagnets find use in many practical applications. Electromagnets are used to lift large masses of magnetic materials such as scrap iron, rolls of steel, and auto parts. Q: What are used to lift large masses of magnetic materials such as scrap iron, rolls of steel, and auto parts? Choices: - Glue - Tape - screws - electromagnets A:
(Answer)
electromagnets
Ques: Answer the following question given this paragraph: The diatoms are unicellular photosynthetic protists that encase themselves in intricately patterned, glassy cell walls composed of silicon dioxide in a matrix of organic particles (Figure 23.18). These protists are a component of freshwater and marine plankton. Most species of diatoms reproduce asexually, although some instances of sexual reproduction and sporulation also exist. Some diatoms exhibit a slit in their silica shell, called a raphe. By expelling a stream of mucopolysaccharides from the raphe, the diatom can attach to surfaces or propel itself in one direction. Q: The diatoms are unicellular photosynthetic protists that encase themselves in intricately patterned, glassy cell walls composed of silicon dioxide in a matrix of organic particles. these protists are a component of freshwater and these? Choices: - waste plankton - land plankton - source plankton - marine plankton A:
Ans: marine plankton
(Q).
Answer the following question given this paragraph: Silver chloride is a non-volatile material, but does not dissolve in water. What effect will it have on the vapor pressure of water?. Q: What type of chloride is a non-volatile material, but does not dissolve in water? Choices: - pink chloride - yellow chloride - lead chloride - silver chloride A:
(A).
silver chloride
Ques:Answer the following question given this paragraph: The volume of a gas contains only about 10% matter, with the rest being empty space. Hsub is equal to Hvap. Q: The volume of a gas is comprised of about 10% matter. what is the rest? Choices: - open space - instead space - normal space - empty space A:

Ans:empty space
Ques: Answer the following question given this paragraph: Metalloids such as boron have an outer energy level that is about half full. These elements need to gain or lose too many electrons for a full outer energy level to come about easily. As a result, these elements are not very reactive. They may be able to conduct electricity but not very well. Q: About how full is the outer energy level in metalloids? Choices: - nearly empty - three-fourth full - a quarter full - half full A:
Ans:
half full