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Stells [14]
3 years ago
7

The population of American bison used to number in the millions of animals. Hunting and other problems greatly decreased the num

ber of bison to about 1,000 animals. Today, the numbers are recovering to estimates of more than 200,000 animals. This crash in the population of bison and recent recovery is an example of __________.
Biology
1 answer:
Anestetic [448]3 years ago
3 0

Answer:

The correct answer is "the bottleneck effect".

Explanation:

The bottleneck effect, also known as a population bottleneck or genetic bottleneck, is defined as sharp reduction of a species population that occurs either by environmental effects or as a consequence of human activities. The dramatical crash the that population of American bison had due to hunting and other problems is an example of a species suffering the bottleneck effect.

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stellarik [79]

Answer: 50% Tt, 25% short, 75% tall

Explanation: Tt x Tt —> TT  tt  Tt tT possible

proportions by genotype TT 25% Tt 50% tt 25%

T dominant so

proportions by phenotype tall (TT, Tt) 75% short (tt) 25%

8 0
3 years ago
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Hypothesize the importance of language to the early modern humans and how it might have contributed to their success.​
andrezito [222]

Answer:

Human language is unique among all forms of animal communication. It is unlikely that any other species, including our close genetic cousins the Neanderthals, ever had language, and so-called sign ‘language’ in Great Apes is nothing like human language. Language evolution shares many features with biological evolution, and this has made it useful for tracing recent human history and for studying how culture evolves among groups of people with related languages. A case can be made that language has played a more important role in our species’ recent (circa last 200,000 years) evolution than have our genes.

Explanation:

hope it helps

8 0
2 years ago
What are transparent worms that prey on other plankton?
TiliK225 [7]
<span><span>Chaetognaths worms </span>are the transparent worms that prey on the other plankton.
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5 0
3 years ago
Helpppp urgent
Amiraneli [1.4K]

Answer:D

Explanation:

7 0
3 years ago
If a small droplet of ordinary fat molecules is suspended in water, the fat molecules form a "ball of spaghetti" with no particu
kolbaska11 [484]

Answer:

Option 1, a charged end and a noncharged end

Explanation:

Complete question

If a small droplet of ordinary fat is suspended in water, the fat molecules form a "ball of spaghetti" with no particular orientation. But if a droplet of phospholipid molecules is put in water, all the molecules point outward, toward the water. Phospholipids are forced into this orientation because phospholipids have _____

  1.  a charged end and a noncharged end
  2.  three fatty acid molecules, all pointing in different directions
  3.  two fatty acid molecules pointing in different directions
  4.  both a saturated fatty acid and an unsaturated fatty acid
  5.  two charged ends

Solution

The structure of phospholipids consists of the following groups and molecules –  

a) A glycerol molecule  

b) Fatty acids (2 in numbers) – It is hydrophobic as it is uncharged and non polar in nature

c) Phosphate group (with alcohol) – It is hydrophilic as it is negatively charged and polar in nature.  

When the phospholipids are placed in  water, the molecule rearranges itself in a way that the hydrophobic head face inside and the hydrophilic head face outside thereby forming micelles.

Hence, option 1 is correct

3 0
3 years ago
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