input: OPTIONS:
- polarity
- heat
- precipitation
- density Now, answer this question: Answer the following question given this paragraph: After trees are cut, logging companies often move these materials down a river to a sawmill where they can be shaped into building materials or other products. The logs float on the water because they are less dense than the water they are in. Knowledge of density is important in the characterization and separation of materials. Information about density allows us to make predictions about the behavior of matter. Q: What property allows cut logs to float on water? A:
A:
output: density

Answer the following question given this paragraph: Q: What kind of medical intervention seeks to eradicate diseases like polio and measles? A:

OPTIONS:
- surgical intervention
- nutrition
- malnutrition
- vaccination

Answer: vaccination

Problem: OPTIONS:
- induced growth
- reproducing growth
- limited growth
- exponential growth
Q: Answer the following question given this paragraph: Exponential Growth Charles Darwin, in his theory of natural selection, was greatly influenced by the English clergyman Thomas Malthus. Malthus published a book in 1798 stating that populations with unlimited natural resources grow very rapidly, and then population growth decreases as resources become depleted. This accelerating pattern of increasing population size is called exponential growth. The best example of exponential growth is seen in bacteria. Bacteria are prokaryotes that reproduce by prokaryotic fission. This division takes about an hour for many bacterial species. If 1000 bacteria are placed in a large flask with an unlimited supply of nutrients (so the nutrients will not become depleted), after an hour, there is one round of division and each organism divides, resulting in 2000 organismsan increase of 1000. In another hour, each of the 2000 organisms will double, producing 4000, an increase of 2000 organisms. After the third hour, there should be 8000 bacteria in the flask, an increase of 4000 organisms. The important concept of exponential growth is that the population growth ratethe number of organisms added in each reproductive generationis accelerating; that is, it is increasing at a greater and greater rate. After 1 day and 24 of these cycles, the population would have increased from 1000 to more than 16 billion. When the population size, N, is plotted over time, a J-shaped growth curve is produced (Figure 45.9). The bacteria example is not representative of the real world where resources are limited. Furthermore, some bacteria will die during the experiment and thus not reproduce, lowering the growth rate. Therefore, when calculating the growth rate of a population, the death rate (D) (number organisms that die during a particular time interval) is subtracted from the birth rate (B) (number organisms that are born during that interval). This is shown in the following formula:. Q: What is the accelerating pattern of increasing population size called? A:
Answer: exponential growth

Problem:OPTIONS:
- sponges
- porifera
- arthropods
- crustaceans

Answer the following question given this paragraph: Crustaceans include crabs, lobsters, shrimp, krill, and woodlice. Q: Crabs, lobsters, shrimp, krill, and woodlice are all? A:
****
A: crustaceans

Answer the following question given this paragraph: Mitochondria are organelles whose membranes are specialized for aerobic respiration. Q: Organelles whose membranes are specialized for aerobic respiration are called what? A:
OPTIONS:
- vacuoles
- mitosis
- chloroplasts
- mitochondria
mitochondria

Answer the following question given this paragraph: It may seem as though burning destroys matter, but the same amount, or mass, of matter still exists after a campfire as before. Look at the sketch in Figure below . It shows that when wood burns, it combines with oxygen and changes not only to ashes but also to carbon dioxide and water vapor. The gases float off into the air, leaving behind just the ashes. Suppose you had measured the mass of the wood before it burned and the mass of the ashes after it burned. Also suppose you had been able to measure the oxygen used by the fire and the gases produced by the fire. What would you find? The total mass of matter after the fire would be the same as the total mass of matter before the fire. Q: It may seem as though burning destroys matter, but the same amount of what, still exists after a campfire as before? A:
OPTIONS:
- termperature
- concentrations
- energy
- mass

Answer:
mass