Answer the following question given this paragraph: Earth is hottest at the equator and gets cooler toward the poles. The differences in heating create huge convection currents in the troposphere. At the equator, for example, warm air rises up to the tropopause. It can't rise any higher, so it flows north or south. Q: When warm air rises up to the tropopause, where does it flow? Choices: - east or north - west or south - east or west - north or south A:
north or south
Answer the following question given this paragraph: repeating bony units that make up the vertebral column of vertebrates. Q: What do vertebrates possess that is made up of repeating bony units? Choices: - notochord - skull - spinal cord - vertebral column A:
vertebral column
Q: Answer the following question given this paragraph: You may have seen this sign beforemaybe in a hospital. The sign means there is danger of radiation in the area. Radiation consists of particles and energy that are given off by radioactive isotopes, which have unstable nuclei. But you don't have to go to a hospital to be exposed to radiation. There is radiation in the world all around you. Q: Radioactive isotopes are characterized by an unstable what? Choices: - shell - proton - electrons - nuclei A:
A: nuclei
Question: Answer the following question given this paragraph: Q: The transmission electron micrograph shows the cell walls where two cells do what? Choices: - split apart - reproduce - disappear - come together A:
Answer: come together
*Question*
Answer the following question given this paragraph: Unlike males, females are not influenced by the male sex hormone testosterone during embryonic development. This is because they lack a Y chromosome. As a result, females do not develop male reproductive organs. By the third month of fetal development, most of the internal female organs have formed. Immature eggs also form in the ovary before birth. Whereas a mature male produces sperm throughout his life, a female produces all the eggs she will ever make before birth. Q: Females are not influenced by the male sex hormone testosterone during embryonic development because they lack what? Choices: - x chromosome - m chromosome - z chromosome - y chromosome A:
**Answer**
y chromosome
(Q).
Answer the following question given this paragraph: The Table below compares the specific heat of four different substances. Metals such as iron have low specific heat. It doesn't take much energy to raise their temperature. That's why a metal spoon heats up quickly when placed in a cup of hot coffee. Sand also has a relatively low specific heat. Water, on the other hand, has a very high specific heat. It takes a lot more energy to increase the temperature of water than sand. This explains why the sand on a beach gets hot while the water stays cool. Differences in the specific heat of water and land even affect climate. To learn how, watch the video at this URL: http://www. youtube. com/watch?v=dkBStF2Rnu4. Q: Why does a metal spoon heat up quickly when placed in a hot drink? Choices: - insulation - high specific heat - convection - low specific heat A:
(A).
low specific heat