Answer the following question given this paragraph: Gas solubility decreases as the temperature increases. Q: What happens to gas solubility as the temperature increases? Choices: - stabilizes - fluctuates rapidly - increases - decreases A:
decreases
Answer the following question given this paragraph: Archaeans are now known to live just about everywhere on Earth. They are important decomposers. Many live in close relationships with other organisms. They are generally harmless and often beneficial. Q: Which important decomposers are known to live just about anywhere on earth? Choices: - protazoas - viruses - sporozoans - archeans A:
archeans
Q: Answer the following question given this paragraph: When plants and other organisms die, decomposers break down their remains. In the process, they release nitrogen in the form of ammonium ions. This process is called ammonification. Nitrifying bacteria change the ammonium ions into nitrites and nitrates. Some of the nitrates are used by plants. The process of converting ammonium ions to nitrites or nitrates is called nitrification. Still other bacteria, called denitrifying bacteria, convert some of the nitrates in soil back into nitrogen gas in a process called denitrification. The process is the opposite of nitrogen fixation. Denitrification returns nitrogen gas back to the atmosphere, where it can continue the nitrogen cycle. Q: What process is the opposite of nitrogen fixation? Choices: - digestion - respiration - percolation - denitrification A:
A: denitrification
Question: Answer the following question given this paragraph: The main function of blood is transport. Blood in arteries carries oxygen and nutrients to all the body's cells. Blood in veins carries carbon dioxide and other wastes away from cells to be excreted. Blood also transports the chemical messengers called hormones to cells throughout the body where they are needed to regulate body functions. Blood has several other functions as well. For example, blood:. Q: What is the main function of blood? Choices: - digestion - respiration - excretion of waste - to transport A:
Answer: to transport
*Question*
Answer the following question given this paragraph: Covalent compounds form individual molecules rather than crystals. Compared with ionic compounds, they have low melting and boiling points. They are also poor conductors of electricity. In polar covalent compounds, oppositely charged ends of different molecules attract each other. This affects the properties of polar compounds. Q: Covalent compounds form individual molecules rather than what? Choices: - carbon - chemicals - atoms - crystals A:
**Answer**
crystals
Q: Answer the following question given this paragraph: Most flowers carry both stamens and carpels; however, a few species self-pollinate. These are known as "perfect" flowers because they contain both types of sex organs (Figure 14.25. Biochemical and anatomical barriers to self-pollination promote cross-pollination. Self-pollination is a severe form of inbreeding, and can increase the number of genetic defects in offspring. A plant may have perfect flowers, and thus have both genders in each flower; or, it may have imperfect flowers of both kinds on one plant (Figure 14.28). In each case, such species are called monoecious plants, meaning "one house. " Some botanists refer to plants with perfect flowers simply as hermaphroditic. Some plants are dioecious, meaning "two houses," and have male and female flowers ("imperfect flowers") on different plants. In these species, cross-pollination occurs all the time. Q: Most flowers carry both stamens and carpels; however, a few species are capable of what and are nicknamed "perfect" flowers? Choices: - sexual reproduction - germination - cloning - self-pollination A:
A: self-pollination