Seawater has many different gases dissolved in it, especially nitrogen, oxygen and carbon dioxide. It exchanges these gases with the atmosphere to keep a balance between the ocean and the atmosphere. This exchange is helped by the mixing of the surface by wind and waves.
Osteoporosis is <span>a medical condition in which the bones become brittle and fragile from loss of tissue, typically as a result of hormonal changes. </span>Our bones store calcium in addition to providing support for our bodies.
Answer:
A wetland is an ecosystem in which water either covers the soil or is present at or near the surface for at least part of the year. Water may flow through freshwater wetlands or stay in place. Wetlands are often nutrient-rich, highly productive, and serve as breeding grounds for many organisms.
Explanation:
This is because the crowing of crops requires much less water and land than raising the energy equivalent in livestock. To explain, consider that most livestock are primary consumers, and are one level above primary producers, in this case, food crops. So there is a large loss in energy between primary producers and primary consumers. So if people chose instead to have a plant-based diet, satisfying their dietary needs could require much less water and land resources. Most livestock, particularly in developed countries, are grain fed. Therefore, grain is cultivated specifically for animal feed, and then people consume the animal protein after a large proportion of the original energy captured by the grain is lost.
