Answer the following question given this paragraph: Q: What kind of medical intervention seeks to eradicate diseases like polio and measles? Choices: - surgical intervention - nutrition - malnutrition - vaccination A:
vaccination
(Question)
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? Choices: - induced growth - reproducing growth - limited growth - exponential growth A:
(Answer)
exponential growth
Ques: Answer the following question given this paragraph: Crustaceans include crabs, lobsters, shrimp, krill, and woodlice. Q: Crabs, lobsters, shrimp, krill, and woodlice are all? Choices: - sponges - porifera - arthropods - crustaceans A:
Ans: crustaceans
(Q).
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? Choices: - vacuoles - mitosis - chloroplasts - mitochondria A:
(A).
mitochondria
Ques:Answer the following question given this paragraph: Chemical sedimentary rocks form when crystals precipitate out from a liquid. The mineral halite, also called rock salt, forms this way. You can make halite! Leave a shallow dish of salt water out in the Sun. As the water evaporates, salt crystals form in the dish. There are other chemical sedimentary rocks, like gypsum ( Figure below ). Q: What are formed when crystals precipitate out from a liquid? Choices: - diamonds - additive sedimentary rocks - gaseous sedimentary rocks - chemical sedimentary rocks A:

Ans:chemical sedimentary rocks
Answer the following question given this paragraph: The color of soil indicates its fertility. Black or dark brown soils are rich in nitrogen and contain a high percentage of organic materials. Soils that are nitrogen poor and low in organic material might be gray, yellow, or red. Q: What visual property of soil indicates fertility and nitrogen content? Choices: - texture - contrast - quality - color A:
color