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Brilliant_brown [7]
4 years ago
11

How does the circulatory system work?

Biology
1 answer:
VARVARA [1.3K]4 years ago
5 0
The blood circulatory system delivers nutrients and oxygen to all cells in the body. It consists of the heart and the blood vessels running through the entire body. The arteries carry blood away from the heart; the veins carry it back to the heart
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t elevatUsing species C as a reference, you find that there are more genetic differences between species A and species C than be
Julli [10]

Answer:

Speciation was allopatric or peripatric, but would depend on the number of individuals that dispersed from the original populations.

Explanation:

  • There are two types of speciation: allopatric and peripatric.
  • Allopatric speciation occurs when the species of same population gets isolated that results in lack of gene flow.
  • From the isolated population, new species are formed then it is known as the peripatric speciation.
  • All these isolation of populations and formation of new species depends upon the initial or original group of species that was dispersed.
5 0
3 years ago
How does adding and removing heat energy to water affect it’s temperature?
alexandr402 [8]

Answer:

Usually, when you add energy to a bunch of atoms they move faster and get hotter. Similarly, if you remove energy from a bunch of atoms, they usually move less and get cooler. Because adding heat energy usually results in a temperature rise, people often confuse heat and temperature.

Explanation:

3 0
3 years ago
On a certain day, Donnie observes the wind is blowing at 2 miles per hour. A bird nesting near Donnie's house flies three quarte
kipiarov [429]

Answer:

Air speed of bird is 4.17 mph

Explanation:

let the speed of the bird in still air be "X"

Speed of the bird when it flies in the direction of flow of wind = X+2

Speed of the bird when it flies in the opposite direction of flow of wind = X-2

The total time taken is equal to 12 minutes

= \frac{12}{60} \\= \frac{1}{5} hours

The distance in miles is equal to \frac{3}{4} = 0.75 miles

  \frac{0.75}{X+2} + \frac{0.75}{X-2} = \frac{1}{5}

On solving the above equation, we get -

2 X = (X^2 -4)*\frac{1}{0.75 *5} \\X^2 -4 -0.75 X =0\\X = 4.17

Air speed of bird is 4.17 mph

3 0
4 years ago
24. Fill in the blanks. An enzyme is made up of _____. Enzymes can
Nikitich [7]
Enzymes are made of strings of amino acids chemically bonded to one another. These bonds give each enzyme a unique structure, which determines its function. They mostly break down carbohydrates and fats. Once a protein source reaches your stomach, hydrochloric acid and enzymes called proteases break it down into smaller chains of amino acids. Amino acids are joined together by peptides, which are broken by proteases.
6 0
3 years ago
What zone is characterized by the basin of the ocean?
svp [43]

Answer:

It is the region of open sea beyond the edge of the continental shelf and includes 65% of the ocean's completely open water. The oceanic zone has a wide array of undersea terrain, including crevices that are often deeper than Mt. Everest, as well as deep-sea volcanoes and ocean basins.

Explanation:

4 0
4 years ago
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