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Answer:
1. Scientists form the geological time scale by describing the order and time when major earth events occurred for the last 4.5 billion years ago. The scale describes the first time plants appeared on earth, the first time animals where spotted on Earth, the processes that formed mountains and the extinction of special species such as the dinosaurs. Geologist study the earth to identify the history of geological events contained in the rock layers of the Earth. Old layers of the Earth are buried deep inside the surface where as the young layers are at the top. With this understanding, geologists are able to comprehend the ages of rocks relative to one another.
2. The Geologic time scale is organized into intervals namely Eons, Eras, Periods, and Ages. The Eons is the largest interval where each eon presents many millions of years. The Eons are divided into Eras which start and end with significant changes in the living organisms on the Earth surface. In each Era, there are multiple periods which are further subdivided into multiple short epochs.
3. The processes that changed Earth’s surface during Precambrian time was changes in climatic condition that caused by creation of the planet and later the emergence of complex and multi-cellular organisms. The Precambrian time was characterized by layers of sedimentary rocks that formed million years ago and contain information of Earth’s past which include fossils remains of living organisms that were buried during formation of sediments.
Explanation:
explained in the answer
Folate deficiency impairs DNA synthesis, so the nuclei of immature red blood cells are unable to divide and the cells grow larger than normal. This condition is called macrocytic anemia.
<h3>What is folate deficiency anemia?</h3>
- The red blood cells in folate-deficiency anemia are excessively big. Macrocytes are this type of cell.
- When they are discovered in the bone marrow, they are also known as megaloblasts.
- This anemia is also known as megaloblastic anemia for this reason.
- When your body doesn't get enough folate, it develops a folate deficiency.
- Symptoms include fatigue, weakness, mouth sores, and neurological issues.
- A diet rich in folate-rich foods can help prevent folate insufficiency.
- Haemoglobin, a component of red blood cells, is used to transport oxygen throughout the body.
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Answer:
D. 365 days
Explanation:
Revolution means covering distance and moving around the sun so it takes a year or 365 days revoluting around the sun.
Vitamin B are required for the following :
- Protection of cell membranes against oxidative damage
- metabolism of amino acids.
<h3>Vitamin B </h3>
Vitamin B is very important for the proper functioning of the body cells in the body by helping with the metabolism process of converting food to energy. Vitamin B helps in the protection and maintenance of healthy skin and all kinds of cells and tissues in the human body.
Vitamin B helps in the rebuilding and creation of new blood cells in the body as well.
Hence we can conclude that Vitamin B are required for the following : Protection of cell membranes against oxidative damage, metabolism of amino acids.
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