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Helen [10]
3 years ago
12

An anthropologist finds a fossil that is 4 million years old. Its pelvis suggests it walked upright. Which species could the spe

cimen belong to?
Biology
1 answer:
Alika [10]3 years ago
4 0
I would think a biped cause that is what we call a 2 legged animal
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One organism benefits while the other is killed is called what?
timama [110]

Answer:

Parasitism

Explanation:

A parasite enters a body of what ever animals and makes the animal weak by eating all the protein or nutrients of the animal to the parasite. So the Parasite benfits while the Animal will be weak or die

7 0
3 years ago
Glaucoma is a leading cause of blindness. Studies have linked a common form of glaucoma to three genes and more than 20 genetic
NeX [460]

Answer: The correct answer is -

d) a dominant trait that depends on the presence of only one of many dominant alleles.

Glaucoma is an autosomal dominant trait, meaning that presence of single copy of the defective gene is enough to cause the disease.

It corresponds to a group of diseases, which cause damage in the optic nerve, leading to loss of vision and if not treated, it ultimately leads to blindness.

Thus, option D) is the right answer.

8 0
3 years ago
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What function do the alveolar sacs serve in the respiratory system?
Brrunno [24]

These alveoli are the smallest types of lung tissue, and one of the most important. In addition to being the primary means by which oxygen enters and carbon dioxide escapes the bloodstream, these small pouches of air are also the reason why the lungs do not totally collapse when a person breathes out. This is because they contain a cell that secretes a special chemical to lower the surface temperature to prevent lung collapse. The alveoli also contain other cells that secrete chemicals to attack and remove any foreign objects in the lungs, such as dust, dirt and other debris.

In addition to making up alveolar sacs, alveoli also form alveolar ducts. It is estimated that there are more than 300 million alveoli in the human lungs, all of which are located in either alveolar ducts or sacs that are found at the end of the smaller passageways, or bronchioles, in the lungs.


SHORT ANSWER:

Alveolar sacs contain tiny pouches called alveoli, whose primary function is gas diffusion. These clusters of alveoli have thin walls that allow oxygen to pass easily from the lungs into the bloodstream and carbon dioxide to flow from the blood to the lungs so it can exit the body.

8 0
3 years ago
What is comet?define it properly ​
Kitty [74]

Answer:

A comet is an icy, small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process called outgassing. This produces a visible atmosphere or coma, and sometimes also a tail.

Explanation:

 a celestial object consisting of a nucleus of ice and dust and, when near the sun, a ‘tail’ of gas and dust particles pointing away from the sun.

6 0
3 years ago
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Which method of reproduction provides the most genetic variation
irakobra [83]
<span>Any type of reproduction in living beings such as, animals, plants, protists bacteria and fungi. Both sexually and a-sexualy causes the most genetic variation.</span>
8 0
3 years ago
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