Answer:
These so-called “immortal” cells were later named “HeLa” after the first two letters of Henrietta Lacks first and last name. Since Ms. Lacks' untimely death in 1952, HeLa cells have been a vital tool in biomedical research, leading to an increased understanding of the fundamentals of human health and disease.
Explanation:
Well, often when explorers explored the world, they had a goal. Whether a goal was to spread a religion or conquest a place, there was always a goal. When the explorers for example tried to conquer a place, casualties often occurred. Which effected the amount of people in the population. Another example is when explorers were trying to spread a religion, the population changed.
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<u>Answer:
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Gravity causes stars to form out of gas clouds
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<u>Explanation:</u>
The formation occurs in molecular clouds in the interstellar space. The atoms of light are first forced under sufficient pressure so that their nuclei undergo fusion. The gravitational force is responsible for this fusion to begin.
The gases present in these clouds clump to form molecules with higher densities. Due to the internal gravitational disturbance, there begins to occur a collapse of the denser regions of the cloud. As the collapse continues to occur, the temperatures begin to increase and each of the smaller clouds will eventually form a star.
Answer:
Across the Arabian Peninsula, the mean annual rainfall is less than 200 mm, thus classifying the climatic conditions of the Peninsula as semi‐arid, arid and hyper‐arid ) However, the rainfall in the southwest of the Peninsula ranges from 200 to 400 mm
Explanation:
Coastal regions and some highlands, however, are subject to high summer humidity, with dew and fog at night or early morning. Rainfall throughout the desert averages less than 4 inches (100 mm) a year but can range from 0 to 20 inches (0 to 500 mm).
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Answer:
Depth of field is the distance between the closest and farthest objects in a photo that appears acceptably sharp. Now your camera can only focus sharply at one point. But the transition from sharp to unsharp is gradual, and the term 'acceptably sharp' is a loose one!
