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sergey [27]
3 years ago
6

This graph shows that bird ranges in the winter have been shifting northward over several decades.

Biology
1 answer:
erik [133]3 years ago
7 0

Answer:

1 migration

2 the northern regions have become warm

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In a comparison of birds and mammals, the condition of having four limbs is.
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What is still lacking in the hypothesis of an asteroid impact as the cause of the end-cretaceous mass extinction?
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A convincing explanation of why some lineages survived while others vanished is still lacking in the hypothesis of an asteroid impact as the cause of the end-cretaceous mass extinction.

<h3>What is an asteroid?</h3>

One of the smaller planets in the inner Solar System is an asteroid. Asteroids are metallic or rocky bodies without an atmosphere, ranging in size from 1-meter pebbles to a dwarf planet with a diameter of over 1000 km.

The majority of the one million or more known asteroids are concentrated in the main asteroid belt, which is 2 to 4 AU from the Sun and between the orbits of Mars and Jupiter. The three categories of asteroids that are typically recognized are C-type, M-type, and S-type.

These were given their names and are frequently associated with, respectively, carbonaceous, metallic, and silicaceous compositions. The largest asteroid, Ceres, has a diameter of over 1,000 km (600 mi), making it a dwarf planet.

To learn more about an asteroid with the help of given link:

brainly.com/question/11996385

#SPJ4

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