Answer the following question given this paragraph: Remember that a phase change depends on the direction of the heat transfer. If heat transfers in, solids become liquids, and liquids become solids at the melting and boiling points, respectively. If heat transfers out, liquids solidify, and gases condense into liquids. Q: What type of direction does a phase change depend on? Choices: - weight transfer - power transfer - humidity transfer - heat transfer A:
heat transfer
(Question)
Answer the following question given this paragraph: Certain compounds, called indicators, change color when bases come into contact with them, so they can be used to detect bases. An example of an indicator is a compound called litmus. It is placed on small strips of paper that may be red or blue. If you place a few drops of a base on a strip of red litmus paper, the paper will turn blue. You can see this in the Figure below . Litmus isn't the only detector of bases. Red cabbage juice can also detect bases, as you can see in this video: http://www. youtube. com/watch?v=vrOUdoS2BtQ . Q: What kind of compounds change color when bases come into contact with them, so they can be used to detect bases? Choices: - liquid - parameters - metals - indicators A:
(Answer)
indicators
Ques: Answer the following question given this paragraph: Fragmentation occurs when a parent organism breaks into fragments, or pieces, and each fragment develops into a new organism. Starfish, like the one in Figure below , reproduce this way. A new starfish can develop from a single ray, or arm. Starfish, however, are also capable of sexual reproduction. Q: What occurs when a parent organism breaks into fragments, or pieces, and each fragment develops into a new organism? Choices: - erosion - absorption - sollution - fragmentation A:
Ans: fragmentation
(Q).
Answer the following question given this paragraph: Oceanographers use bathymetric maps to show the features of the bottom of a body of water. Q: What kind of map can show the features of the bottom of a body of water? Choices: - topographic - basic - country - bathymetric A:
(A).
bathymetric
Ques:Answer the following question given this paragraph: Scientists perform experiments to test their hypotheses because sometimes the nature of natural universe is not obvious. Q: Scientists perform experiments to test their hypotheses because sometimes the nature of natural universe is what? Choices: - become obvious - very obvious - this obvious - not obvious A:

Ans:not obvious
Question: Answer the following question given this paragraph: Some bacteria also have tail-like structures called flagella ( Figure below ). Flagella help bacteria move. As the flagella rotate, they spin the bacteria and propel them forward. It is often said the flagella looks like a tiny whip, propelling the bacteria forward. Though some eukaryotic cells do have a flagella, a flagella in eukaryotes is rare. Q: What type of cells are flagella rare in? Choices: - intracellular - cancer. - synthetic - eukaryotic A:
Answer:
eukaryotic