Q: What's the term for the period during which women's ovaries stop producing eggs? Read this paragraph and choose the correct option from the provided answers: For most women, menstrual cycles continue until their mid- or late- forties. Then women go through menopause , a period during which their menstrual cycles slow down and eventually stop, generally by their early fifties. After menopause, women can no longer reproduce naturally because their ovaries no longer produce eggs. Choices: - puberty - maturity - adolescence - menopause A:
menopause

(Question)
Q: What's it called when gases turn back into liquids? Read this paragraph and choose the correct option from the provided answers: As water cools in the clouds, condensation occurs. Condensation is when gases turn back into liquids. Choices: - dehydration - diffusion - evaporation - condensation A:
(Answer)
condensation

Ques: Q: What is the general name for the homogeneous mixture that is formed when a solute dissolves in a solvent? Read this paragraph and choose the correct option from the provided answers: A solution is a homogeneous mixture in which a solute dissolves in a solvent. Water is a very common solvent, especially in organisms. Choices: - Reaction - Combination - Dissolvant - solution A:
Ans: solution

(Q).
Q: What protective substance covers the skin of most reptiles? Read this paragraph and choose the correct option from the provided answers: Reptiles are a class of tetrapod vertebrates that produce amniotic eggs. They include crocodiles, alligators, lizards, snakes, and turtles. The reptile class is one of the largest classes of vertebrates. It consists of all amniotes except birds and mammals. Reptiles have several adaptations for living on dry land that amphibians lack. For example, as shown in Figure below , the skin of most reptiles is covered with scales. The scales, which are made of very tough keratin , protect reptiles from injury and prevent them from losing water. Choices: - hairs - feathers - pores - scales A:
(A).
scales

Ques:Q: How many people die from air pollution each year? Read this paragraph and choose the correct option from the provided answers: Air pollution is harmful to human beings and other living things. About 22 million people die from air pollution each year. Breathing polluted air increases the risk of developing lung diseases such as asthma and lung cancer. Breathing bad air also increases the chances of dying from other diseases. Children are most likely to be affected by air pollution. That's because their lungs are still developing and growing. Children also take in more air for their size than adults do. Some air pollutants damage the environment as well as the health of living things. The type of damage depends on the pollutant. Air pollution can also harm the environment. Choices: - 14 million - 17 million - 5 million - 22 million A:

Ans:22 million

Question: Q: What are responsible for removing excess h+ ions from the blood? Read this paragraph and choose the correct option from the provided answers: The kidneys are responsible for removing excess H+ ions from the blood. If the kidneys fail, what would happen to blood pH and to hemoglobin affinity for oxygen? Factors That Affect Oxygen Binding The oxygen-carrying capacity of hemoglobin determines how much oxygen is carried in the blood. In addition to P O , 2 other environmental factors and diseases can affect oxygen carrying capacity and delivery. Carbon dioxide levels, blood pH, and body temperature affect oxygen-carrying capacity (Figure 39.20). When carbon + dioxide is in the blood, it reacts with water to form bicarbonate (HCO 3 ) and hydrogen ions (H ). As the level of carbon dioxide in the blood increases, more H+ is produced and the pH decreases. This increase in carbon dioxide and subsequent decrease in pH reduce the affinity of hemoglobin for oxygen. The oxygen dissociates from the Hb molecule, shifting the oxygen dissociation curve to the right. Therefore, more oxygen is needed to reach the same hemoglobin saturation level as when the pH was higher. A similar shift in the curve also results from an increase in body temperature. Increased temperature, such as from increased activity of skeletal muscle, causes the affinity of hemoglobin for oxygen to be reduced. Diseases like sickle cell anemia and thalassemia decrease the blood's ability to deliver oxygen to tissues and its oxygencarrying capacity. In sickle cell anemia, the shape of the red blood cell is crescent-shaped, elongated, and stiffened, reducing its ability to deliver oxygen (Figure 39.21). In this form, red blood cells cannot pass through the capillaries. This is painful when it occurs. Thalassemia is a rare genetic disease caused by a defect in either the alpha or the beta subunit of Hb. Patients with thalassemia produce a high number of red blood cells, but these cells have lower-than-normal levels of hemoglobin. Therefore, the oxygen-carrying capacity is diminished. Choices: - liver nodes - intestinal walls - stomach chambers - kidneys A:
Answer:
kidneys