Answer:
The correct answer is option A. convergent evolution.
Explanation:
Convergent evolution occurs when there are <u>two organisms that have similar characteristics or traits</u>, but there is no recent ancestor from which they have evolved.
That is, each species developed its own characteristic and did not inherit it from a common ancestor. This happens because depending on the habitat, the species have to <u>develop the same solution to a problem that presents itself, even if they are of different species.
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An example of this is sharks and dolphins. They are <u>physically very similar</u>, both have soft skin and fins that serve to chase their prey.
But if we look better, <u>the shark is oviparous</u>, while the <u>dolphin is mammal.</u>
<u>The shark is a killer carnivore while the dolphin is a friendlier animal.
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The explanation of their similarity is due to the fact that the last ancestor they shared lived about 290 million years ago, that is, it was not recent. Then both animals were forced to <u>evolve differently.
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Homology is called to those organisms that have structural similarities because they share the inheritance of a common ancestor.
And it is called analogy to similar characteristics but that do not come from a common ancestor.
Answer:
The mean number of red cubes is more than the median number of red cubes.
Explanation:
hope this helps
<span>Sedimentation and erosion of a stream can create channelization.
It can create numerous small channels to
flow. The erosion can create the banks of the stream to disappear quickly while
the sedimentation will reduce the depth of the stream, resulting in overflow
along the banks. This can create great amount of destruction. The new channels
can flood new areas and destroy both crops and livelihood. The sedimentation
can also give birth to new land due to constant deposition of silt. </span>
The changes in the phases of the Moon are caused by its position towards the Sun, not as it is commonly thought that it is because of the Earth's shadow on it.
What we see from the Moon, the bright part and the almost invisible dark part (looking with bear eyes of course), is only dependent on how the Moon is positioned towards the Sun. The part that is bright is the part that faces the Sun, while the part that is dark is the part that is on the opposite side, thus not facing the Sun.
Depending on the Moon's position towards the Earth as well, we can sometimes see it as partially bright, as half bright, full bright, and everything in between, and that depends on how the Moon is positioned towards the Earth.
Answer:
True
Explanation:
Escape velocity is the speed needed for any freely moving object to run away from the gravitational pull of the massive body like the sun. This depends on the direction of movement as earth's escape velocity is 465m/s at the equator so a rocket would need a speed of 10.73 km from where the rocket would launch the surface velocity would impact it and the escape velocity would eventually decrease due to friction and gravity pull.