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3 years ago

Explain the Importance of female salmon digging a hole in bottom of the stream?

Biology

1 answer:

Neko [114]3 years ago

7 0

Answer:

Female salmons create the hole where eggs are laid and fertilized by male sperm cells.

Explanation:

Salmon are fishes which live in salt water oceans and fresh water streams. They return to their home stream and lay their eggs at the bottom of the stream by digging it. This is usually done by The female salmon turning on her side and beating the river bed with powerful sweeps of her tail. She does this until the hole is a foot and a half deep. She then lays the egg there which is then fertilized with speed by the male.

She then dies in the same place in which she was born about 5 years earlier.

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Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 5 liters of natural oil for every 3 liters of

ELEN [110]

Answer:

Total 495 liters of natural oil are needed.

Explanation:

It is given that Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 5 liters of natural oil for every 3 liters of synthetic oil.

It means the ratio of natural oil and synthetic oil is

$\frac{\text{Natural oil}}{\text{Petrolyn motor oil}}=\frac{5}{5+3}=\frac{5}{8}$

Let in order to make 792 liters of Petrolyn oil he needs x liters of natural oil.

It means the ratio of natural oil and synthetic oil is

$\frac{\text{Natural oil}}{\text{Petrolyn motor oil}}=\frac{x}{792}$

Equate both ratios,

$\frac{x}{792}=\frac{5}{8}$

On cross multiplication we get

$8\times x=5\times 792$

$8x=3960$

Divide both sides by 8.

$x=\frac{3960}{8}$

$x=495$

Therefore total 495 liters of natural oil are needed.

6 0

4 years ago

What is conduction or the definition of conduction

Gemiola [76]

Conduction is when an object allows electricity to pass through it. Think of something like a wire, coper, and steel. Good luck dude!

6 0

3 years ago

Read 2 more answers

If there are 8 chromosomes in the parent cell, after Mitosis, how many chromosomes will be in the 2 daughter cells created?

leonid [27]

Answer:

8 chromosomes in each daughter cell

Explanation:

Mitosis creates identical cells. If there are 8 chromosomes in the parent cell, there will be 8 chromosomes in each daughter cell. The way it works is that in late Interphase, the number of chromosomes and DNA double. In this case there would be 16 chromosomes. And when the cell splits into two during cytokinesis, each of the two would get half the chromosomes. Hence, there would be 8 chromosomes in each daughter cell.

5 0

3 years ago

What came first? The chicken, or the egg?<br><br><br><br>:3

Novay_Z [31]

Answer:

egg lol

Explanation:

hi :p

3 0

3 years ago

Read 2 more answers

John had unattached earlobes like his father, but his mother has attached earlobes. What is johns genotype with unattached being

Varvara68 [4.7K]

Genotype refers to the complete genetic make-up and can also be referred to as the alleles an organism carries on a particular gene.

John's genotype with unattached being dominant is Aa.

Using A to represent the alleles

Since his mother has attached earlobes, her condition can only be inherited in the recessive condition (aa).
So for John to have an unattached earlobe, his father has to be either AA or Aa.
Therefore John's genotype would be Aa

Learn more about genotype: brainly.com/question/22117

3 0

3 years ago