Alfred Wegener, in the first three decades of this century, and DuToit in the 1920s and 1930s gathered evidence that the continents had moved. They based their idea of continental drift on several lines of evidence:
- fit of the continents
- paleoclimate indicators
- truncated geologic features
- and fossils.
<h3>What is Alfred Wegener's theory of continental drift?</h3>
The existence of Pangea was first suggested at the beginning of the 20th century by the German meteorologist Alfred Wegener, which created a huge controversy among the scientific class of the time.
<h3>Paleoclimate indicators</h3>
Pangea is the name given to the supercontinent that made up the Earth's surface from the Permian to the Triassic periods. This single mass was also bathed by a single ocean, called Panthalassa. The separation of Pangea, which gave rise to the configuration of the continents as we know them today, began 230 million years ago.
With this information, we can conclude that Wegener also noticed that there were major mountain building event sin the northern Appalachians and in northwestern Europe of the same age.
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oml that cat is so cute!!!! Animal cells come in many different shapes and sizes. The shapes of cells have evolved to help them carry out their specific function in the body, so looking at a cell's shape can give clues about what it does.
<span>a pup will have white short fur, with the odds of 1 in 16 or 6.25%
For this problem, I will use the following notation.
c = Recessive for white fur.
C = Dominant for brown fur.
l = Recessive for short fur.
L = Dominant for brown fur.
Both parent mice have the genes cClL, so their respective eggs and sperm can be one of 4 different set of genes. They are cl, cL, Cl, CL.
For a pup to have white, short fur, it has to have the genes ccll. Any other combination will result in either brown fur, or long fur, or both. That in turn means that both the egg and sperm that went into making the pup have to have the genes cl. No other combination will do.
Since the change of getting a cell with only cl is one of the four possible choices, there's a 1 in 4 chance of the proper type of egg or sperm cell to be used. And since you have both a mother and a father, you have a 1/4 chance for both. So you multiply them together. So the probability of a pup having white short fur is 1/4 * 1/4 = 1/16 = 0.0625 = 6.25% = 1 in 16.</span>
B to obtain oxygen
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