Answer:
Many scientists favor the RNA world hypothesis, in which RNA, not DNA, was the first genetic molecule of life on Earth. Other ideas include the pre-RNA world hypothesis and the metabolism-first hypothesis. Organic compounds could have been delivered to early Earth by meteorites and other celestial objects
Answer:
C.
Explanation:
The axial skeleton include the vertebrae, sacrum, coccyx, ribs, and sternum. The main focus of these is to protect the vital organs. The appendicular skeleton is made up of pectoral and pelvic girdle along with forearms, hands, feet, ankle. The main purpose, movement.
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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Hormones are sent throughout the system
Decreasing enzyme binding affinity by blocking the active site.
