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2 years ago

What was the discovery scientists made in the 1950's that led them to then accept Wegener's theory of Continental Drift?

Biology

1 answer:

aleksley [76]2 years ago

4 0

Answer & explanation:

The theory of continental drift emerged a long time ago. When mapping some points on Earth, scholars suspected that the continents were united in the past.

Francis Bacon suggested in 1620 that the east coast of the South American continent and the west coast of Africa fit together perfectly, giving the impression that they had parted in the remote past. A similar observation to this had already been made by another scholar named Abraham Ortelius, around 1596.

A century later, hypotheses became a scientific theory with previously elaborated arguments. Then, the theory of Continental Drift was officially born, when the German Alfred Wegener formulated it in 1912, establishing that the Earth had been divided, in its slow fragmentation, into two great continents, Laurasia and Gondwana.

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Mariulka [41]

Answer:

The sampling method involves counting the total number of organisms in a certain area and then using that number to determine the total number of organisms in a larger area.

Explanation:

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3 years ago

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Which of these physical factors most shapes the characteristics of a ecosystem? A) soil type B) longitude C) temperature and rai

Nezavi [6.7K]

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Ratling [72]

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3 years ago

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Vesna [10]

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2 years ago

Usatestprep--According to the model, what is the role of maltose in the maltose operon?

allsm [11]

Answer:

<u>Inducer</u>

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Explanation:

Structural proteins within bacteria are encoded along with their functions. These are typically found in a block of genes called an operon. They undergo transcription together with the use of a single promoter sequence to form a polycystronic transcript- this allows for the simultaneous control and regulation of biochemical pathways. This is efficient as these pathways would either need to function together when "switched on" or will not be needed when "switched off". Repressors are proteins that effectively hinder translation by binding to DNA at the operator site, blocking the activity of RNA polymerase in transcription. However inducers are small molecules that can displace these, freeing up the operon for transcription and the activation of relevant biochemical pathways.

The mal operon includes genes which mediate the breakdown of the substrate maltose in bacterial cells. Maltose, called a malt sugar, is a carbohydrate compound made up of two glucose molecules joined by an α-(1,4) glycosidic linkage.

In the presence of maltose, the inducer binds to the activator. This then allows for the binding of RNA polymerase, which facilitates translation and th epr

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3 years ago

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