Answer:
Topsoil is the part of a soil profile that is made up of partly weathered rock.
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Answer:
C.
In general, prokaryotic cells do not have a true nucleus or membrane-bound organelles, whereas eukaryotic cells contain both a nucleus and organelles enclosed by membranes.
Explanation:
Answer: because the interactions between these organisms enable the cyclic flow of energy and nutrients in the ecosystem.
Explanation:
The central vacuole in a plant cell takes up most of the space. The vacuole stores wastes and nutrients, and also provides support and structure for the cell.
Answer:
In econometrics, a dynamic factor (also known as a diffusion index) is a series which measures the co-movement of many time series. It is used in certain macroeconomic models.
Explanation: