Answer:
La presión del agua es una de las razones.
Explanation:
Una gran razón de esto es la presión presente en el agua. El agua es más pesada que el aire, por lo que a presiones más profundas se vuelve más difícil para ciertos animales funcionar. Para dar cuenta de esto, muchos organismos y plantas dentro del agua se desarrollan para no tener esqueletos, ciertos órganos y otras partes del cuerpo que limitan su existencia en el agua. Las medusas son un buen ejemplo de esto.
One option that is not true about Polar projections is that C. It only shows one hemisphere.
<h3>What do polar projections do?</h3>
Polar projections are a type of azimuthal projection that aim to showcase the furthest areas north and south of the Earth. This means that they show both the Arctic and Antarctica in the model.
The Artic is in the Northern hemisphere and Antarctica is in the Southern hemisphere. This means that both hemispheres are shown and it is wrong to say that polar projections show only one hemisphere.
Find out more on polar projections at brainly.com/question/298112
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<span>The outer edge of a meander, where material is being eroded, is called a cut bank.
A cut bank is found on the outside bank of a water channel and it continuously erodes. You can find a lot of them in more mature or meandering streams. </span>
Dark matter makes up about 27% of the universe.
We need to assume that the orbits are circular; this is a very good approximation and do not hesitate to adopt it. We need then to consider the basic equation of circular motion that relates centripetal acceleration, angular velocity, mass, radius and force:

. We also have the basic equation of Newton, F=ma. By checking, we see that for each planet we have that a=v^2*r where v is the angular velocity. v=

where T is the orbital period, hence we have that a=

. Denote with the index 1 the Earth case and with 2 the Mars case. We have then that

. Substituting the known values in a calculator, we get the result: the centripetal acceleration of earth is 2.32 times greater than that of Mars.