"Ecosystem services are the benefits that people obtain from ecosystems. ... From the availability of adequate food and water, to disease regulation of vectors, pests, and pathogens, human health and well-being depends on these services and conditions from the natural environment." According to the World Health Organization
The layer of solid ground that makes up all of Earth’s continents is called the Lithosphere. Thus, the correct option for this question is A.
The lithosphere may be defined as the rigid and outer part of any celestial body like earth. The lithosphere of the earth significantly includes the brittle upper portion of the mantle and the crust along with the outermost layers of Earth's structure.
In the region of the lithosphere, the rocks are cooler, stronger, and more rigid as compared to the other parts of the earth's surface. It is the strength of the rock and the existence of the continents that differentiated the lithosphere from other parts.
Therefore, the lithosphere is the layer of solid ground that makes up all of Earth’s continents. Thus, the correct option for this question is A.
To learn more about Lithosphere, refer to the link:
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I just took this and it's an Astrolabe
B. recognize infected body cells.
C. discover antigens in body fluids.
D. are made in the red bone marrow.
The correct answer is (c) discover antigens in body fluids.
B lymphocytes act as antigen presenting cells that recognizes and displays the antigen to the white blood cells. These cells process the antigens that are present in body fluids. Professional antigen presenting cells includes B-lymphocytes, macrophages, dendritic cells, etc.
B. 2.89 g/mL
C. 5.50 g/mL
D. 6.67 g/mL