Answer the following question given this paragraph: Acclimatization Especially in situations where the ascent occurs too quickly, traveling to areas of high altitude can cause AMS. Acclimatization is the process of adjustment that the respiratory system makes due to chronic exposure to a high altitude. Over a period of time, the body adjusts to accommodate the lower partial pressure of oxygen. The low partial pressure of oxygen at high altitudes results in a lower oxygen saturation level of hemoglobin in the blood. In turn, the tissue levels of oxygen are also lower. As a result, the kidneys are stimulated to produce the hormone erythropoietin (EPO), which stimulates the production of erythrocytes, resulting in a greater number of circulating erythrocytes in an individual at a high altitude over a long period. With more red blood cells, there is more hemoglobin to help transport the available oxygen. Even though there is low saturation of each hemoglobin molecule, there will be more hemoglobin present, and therefore more oxygen in the blood. Over time, this allows the person to partake in physical exertion without developing AMS. Q: At high altitudes, acclimatization increases red blood cells, so there is more what to help transport the available oxygen? Choices: - platelets - plasma - leukocytes - hemoglobin A:
hemoglobin
(Question)
Answer the following question given this paragraph: Plants aren't the only organisms that use the energy of the sun to make food. Some bacteria can also perform photosynthesis. In fact, the first photosynthetic organisms on Earth were bacteria. Photosynthesis is just one of many ways that bacteria can obtain energy. Q: What were the first photosynthetic organisms on earth? Choices: - mosses - trees - fungi - bacteria A:
(Answer)
bacteria
Ques: Answer the following question given this paragraph: Fish reproduce sexually. They lay eggs that can be fertilized either inside or outside of the body. In most fish, the eggs develop outside of the mother's body. In the majority of these species, fertilization also takes place outside the mother's body. The male and female fish release their gametes into the surrounding water, where fertilization occurs. Female fish release very high numbers of eggs to increase the chances of fertilization. Q: How do most fish reproduce with one another? Choices: - on land - asexually - same sex - sexually A:
Ans: sexually
(Q).
Answer the following question given this paragraph: Hurricanes are cyclones. Since they form in the tropics, they are called tropical cyclones. These storms form over very warm ocean water in summer and autumn. The temperature of the sea surface must be 28 o C (82 o F) or higher. The air above the water warms and rises. This forms a low pressure cell. The air begins to rotate around the low pressure cell. Water vapor condenses. If conditions are right, the storm will build into a hurricane in two to three days. Q: Hurricanes that form in the tropics are called what? Choices: - rain cyclones - tornados - caribbean cyclones - tropical cyclones A:
(A).
tropical cyclones
Ques:Answer the following question given this paragraph: Meteorites provide clues about our solar system. Many were formed in the early solar system ( Figure below ). Some are from asteroids that have split apart. A few are rocks from nearby bodies like Mars. For this to happen, an asteroid smashed into Mars and sent up debris. A bit of the debris entered Earth's atmosphere as a meteor. Q: What astronomical phenomenon, formed of split asteroids or planetary rocks, provides clues about our solar system? Choices: - galaxies - comets - stars - meteorites A:

Ans:meteorites
Answer the following question given this paragraph: Yes! The outer core, anyway. The outer core is liquid metal, like in this photo. Of course, the metal is under an incredible amount of pressure. Q: What is the outer core made of? Choices: - compressed air - solid rock - solid iron - liquid metal A:
liquid metal