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Pani-rosa [81]
4 years ago
14

Which constellation is commonly referred to as the Great Bear?

Biology
2 answers:
Mariana [72]4 years ago
3 0

Answer:

Ursa Major/ The Big Dipper

Explanation:

stealth61 [152]4 years ago
3 0

<u>Answer:</u>

<em>Ursa Major </em>

<em></em>

<u>Explanation:</u>

Ursa Major is a "constellation" in the "northern sky" which is also called the great bear. Ancient people people saw this set of stars shaped as bear thus named it as big bear. It is visible for most of the year and from almost the whole world.  

"Ursa Major" was used a lot as a "navigational tool" by sailors and travelers who used it to find North before compasses were invented. It is also called the big dipper. The "Big Dipper" is simply a "random pattern" in the sky that is easy to find, but it is only part of the "Ursa Major constellation" which is shaped like a bear.

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In seed-eating finches in the Galapagos Islands, birds with large beaks are adapted to eat seeds with hard shells,
astraxan [27]

Answer:

The answer might be D

Explanation:

The answer could be D because birds with larger beaks should be capable of eating soft shell seeds, as well as hard shell seeds. So natural selection would not occur because the finches with large beaks would not die as a result of not eating soft shell seeds. The finches with large beaks should be able to reproduce offspring with the same trait. And so should the finches with small beaks.

8 0
3 years ago
There are two different species of finch that live on the same small island, species A and
vitfil [10]
I would say either 2 or 4, but 4 is more likely. New mutations can cause the finch to be able to eat larger seeds, or it can cause it to not be able to eat large things. The environment can also be a big factor. Finches living in the trees are closer to the seeds and the finches living in the logs are closer to the insects.

Hope this is clear enough.
8 0
4 years ago
The absorptive effectiveness of the small intestine is enhanced by increasing the surface area of the mucosal lining. Which of t
bekas [8.4K]

Answer:

plicae circulares and intestinal villi

Explanation:

The inner wall of the intestine is full of wrinkles, called villi. An enlargement of them under the microscope reveals that they are formed by cells whose surface has innumerable small "wrinkled" structures. The small intestine is the largest viscera of the body (about six meters). Intestinal villi and microvilli increase the area of ​​contact with the intestine as well as the speed of absorption of food. Blood capillaries and lymph are in these villi to absorb nutrients.

The intestinal villi, have the function of increasing the absorption of nutrients after digestion. They are the folds of the intestines. The surface of the villi has an area of ​​12 cm² and the microvilli 240 cm².

Villi and microvilli increase the area of ​​intestinal absorption by approximately 30 times and 600 times, respectively, providing exceptionally efficient absorption of nutrients in the lumen.

The entire small intestine has circular folds of mucosa, also called Kerckring valves and circular plicae. Most extend transversely around the small intestine cylinder for about half or two-thirds of its circumference, but some form complete circles, and some have a spiraling direction; The latter usually extend a little more than once around the bowel, but occasionally two or three times. Circular folds slow the passage of partially digested food along the intestines and provide an increased surface for absorption.

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4 years ago
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I'm having trouble on this too :(
4 0
4 years ago
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True, DNA is DNA, it matters not wether or not it belongs to a plant, you could mix a carrot with a pig (not sure why you would, but you can)
8 0
4 years ago
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