There are three major types of blood vessels: the arteries, which carry the blood away from the heart; thecapillaries, which enable the actual exchange of water and chemicals between the blood and the tissues; and the veins, which carry blood from the capillaries back toward the heart.
Each layer has its own properties, composition, and characteristics that affects many of the key processes of our planet. They are, in order from the exterior to the interior – the crust, the mantle, the outer core, and the inner core.
Messenger RNA (mRNA) is a large family of RNA molecules that convey genetic information from DNA to the ribosome, where they specify the amino acid sequence of the protein products of gene expression.
Answer:
1. Physical models: smaller and simpler representations of the thing being studied. Eg. A globe or a map is a physical model of a portion or all of Earth.
2. Conceptual models: ties together many ideas to explain a phenomenon or event.
3. Mathematical models: sets of equations that take into account many factors to represent a phenomenon. Mathematical models are often done on computers.
4. Mental models: personal and internal representations of external reality that people use to interact with the world around them. They are constructed by individuals based on their unique life experiences, perceptions, and understandings of the world.
Geosphere is the sphere containing sediments as well as rocks
- hydrosphere can be regarded as the sphere which contains total amount of water that exist on a planet.
- The geosphere can be regarded as the collective name that is used to call the atmosphere of the earth lithosphere as well as hydrosphere, and cryosphere.
- The geosphere can be regarded as sphere which contains the rocks as well as minerals on Earth
- The geosphere is also the sphere with abiotic/non-living parts of soils as well as the skeletons of animals, it also contains sediment as well as rocks.
- An atmosphere can be regarded as the layers which consists of gases which envelope a planet.
Therefore, geosphere is collection of spheres containing sediments as well rocks.
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