A ___ is a type of turbine used to capture the energy of moving air

In a crossed-extensor reflex, if the right arm was grabbed it would flex and the left arm would ________.

Kryger [21]

In a crossed-extensor reflex, if the right arm was grabbed it would flex and the left arm would _EXTEND_. :)

8 0

2 years ago

how do the strategically placed covalent and hydrogen bonds present in dna facilitate the functioning of the molecule

Sergio [31]

<h3>Answer and explanation;</h3>

DNA is a double stranded molecule. Covalent and hydrogen bonds pray important roles in the functioning of DNA molecules.
Covalent bonds occur within each linear strand and strongly bond the nucleotide bases, sugars, and phosphate groups occurring both within each component and between components.
Hydrogen bonds occur between the two strands and involve a base from one strand with a base from the second in complementary pairing.
Hydrogen bonds helps the complementary base pairs in DNA; guanine with cytosine and adenine with thymine to connect to one another. The hydrogen bonds between these complementary pairs helps keep the two strands of DNA helix together.

6 0

3 years ago

Fossils of Glossopteris, an extinct fern, were discovered on which continents to support the theory of continental drift? Check

Alenkasestr [34]

Accordin to Du Toit's list supporting the theory of continental drift, the correct options are A, C, ad D. Fossils of Glossopteris were discovered on Africa, Australia, and Antarctica.

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Before answering the question, let us first review some theoretical frameworks,

• The tectonic plates theory explains the movement of the different plates based on the crust movements.

• The continental drift theory explains how these movements have been taking place for millions of years.

Alfred Wegener was the first one to state the concept of continental drift.

He proposed that once all continents were together a single big continent named Pangea, and with time, they split and separated into many pieces.

The geologist Du Toit published in 1937 a list of 10 pieces of evidence that would support the theory of tectonic plates and continental drift.

Du Toit's list includes evidence of Gondwana glaciation, lithological and structural evidence, plates fitting together, and paleontological evidence.

Paleontological evidence

• Plant and animal fossils distribution suggests the existence of a big unique continent. When reconstructing the supercontinent, the areas where these fossils were found get together in the same supercontinental region.

• Glossopteris (fern) impressions are widely distributed in determined areas of Africa, South America, India, Australia and Antarctica.

• Terrestrial vertebrate fossils also support the theory. The presence of Triassic tetrapods in all continents suggests terrestrial corridors between landmasses.

Finding Glossopteris in Australia, India, South America, Antarctica and Africa suggests that continents were once together, and these species used to live in the same region.

With time, these continents diverged and got separated by the oceans. The region where Glossopteris used to live got divided.

The correct options are A, C, and D. Africa, Australia, Antarctica.

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You can learn more about Glossopteris at

brainly.com/question/984155

7 0

3 years ago

When justin was injured in a car accident, he lost consciousness for 10 minutes. he had sustained numerous lacerations, a right

aliya0001 [1]

This would require an MRI. By using the magnetic waves, the doctor can figure out which tissues in the brain sustained damage (if any). In addition, the MRI can produce images that would not be as easily shown by CT scans.

3 0

3 years ago

Free points :)

Reptile [31]

Thank you :), I really needed that, everything has just been going down lately

7 0

3 years ago

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