Answer:
living things respire to get oxygen for living cells to function. Without air, there is no life. Plants use Carbon Dioxide (together with sunlight and water) to produce energy and give out Oxygen as a by-product. This oxygen is what almost all animals need to survive.
Explanation:
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In the last few weeks of pregnancy the first air sacs develop. More surfactant is produced as the lungs carry oberdeveloping. The blood vessels andblung cells develop and change to increase the amount of surface area available for oxygen to get into the blood. This prepares your baby's lungs to breathe outside the womb
Answer;
Approximately 33% of adults reported participating in leisure time physical activities
Explanation;
-The latest data on adult participation in physical activity reveals that approximately 33% of adults reported participating in leisure time physical activities.
-Physical activity is defined as any bodily movement produced by skeletal muscles that requires energy expenditure. According to the department of health and human services, adults require; At least 150 minutes of moderate aerobic activity or 75 minutes of vigorous aerobic activity a week, or a combination of moderate and vigorous activity.
C. Because it is the only one we don’t see often and isn’t used often unless you are near it. All the others are used daily
Answer:
The correct answer is - option A.
Explanation:
Price floor is a minimum price determined by the government at which a particular item can be sold. It is legal to sell the item on the minimum price which is often imposed by the government when farmers or sellers of the item convince that market price is not fair without a price floor.
In this case the farmers are farmers use improved, drought resistant seeds, which lowers the cost of growing soybeans which can transform the price floor.
Thus, the correct answer is - option A.