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denis-greek [22]
1 year ago
6

Which event triggers the start of black hole formation?

Biology
1 answer:
docker41 [41]1 year ago
8 0

Answer:

A stellar-mass black hole forms when a star with more than 20 solar masses exhausts the nuclear fuel in its core and collapses under its own weight. The collapse triggers a supernova explosion that blows off the star's outer layers.

Explanation:

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Examine the cell diagrams shown. Which of the following choices identifies the eukaryotic cell for the correct reason?
Simora [160]

Answer:

Option a

Explanation:

A eukaroytic cell contains more organelles than prokaryotic cells, and it is much bigger and complex.

hope this helps and is right :)

6 0
1 year ago
which of the following normally occurs regardless of whether or not oxygen (o���) is present?; a) glycolysis; b) fermentation; c
Leno4ka [110]
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6 0
1 year ago
Which of the following is a good predictor of biodiversity in terrestrial ecosystems?
finlep [7]

The correct answer is - predator species in a community.

In the terrestrial ecosystems, a very good and usually sure predictor of the biodiversity is the existence of a predator species. The more predator species there are, the higher the biodiversity, and vice versa, the less predator species, the lesser the biodiversity.

The reason why the predators are such a good predictor of the biodiversity is that they are the species that are on the top of the food chain. That means that the predators are dependent for their survival on all the other species bellow them in the food chain, which is pretty much all species apart from themselves.

If a predator is present, than there has to be pray. If there's pray, omnivores and herbivores, than there has to be plants. All of the organisms are connected to one another, and the ones on the top of the food chain are the most dependent on the others, thus their existence usually means a healthy ecosystem with higher biodiversity.

4 0
2 years ago
Check your understanding
wel

The fraction of offspring with black coat color and straight fur is 9/16.

Explanation:

Information given:

black coat colour and straight fur - dominant genotype BBCC, BbCc

yellow coat colour and curly fur - recessive genotype  bbcc

Both the traits are independently assorted. The fur colour and fur type is not present on the same chromosome and are not sex linked.

The genotype of the parents are:

BbCc X BbCc

Punnet square shows:

          BC           Bc          bC        bc

BC  BBCC   BBCc        BbCC   BbCc

Bc  BBCc   BBcc          BbCc    Bbcc

bC BbCC    BbCc         bbCC   bbCc

bc  BbCc      Bbcc         bbCc    bbcc

9 BLACK STRAIGHT

 3 BLACK CURLY

 3 YELLOW STRAIGHT

  1  YELLOW CURLY

9/16 is the fraction of progeny to be black coat colour and straight fur.

5 0
1 year ago
Gene duplication and divergence is thought to have plated a critical role in the evolution of increased bilogical complexity
LUCKY_DIMON [66]
A. true is the answer
5 0
2 years ago
Read 2 more answers
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