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umka2103 [35]
3 years ago
8

Which of the following can be used to determine latitude? (2 points)

Biology
1 answer:
mamaluj [8]3 years ago
8 0

Answer;

Astrolabe

Explanation;

-An astrolabe is a device that uses astral bodies like the sun and stars to either tell your position in latitude or tell the local time. It can also be used to measure celestial events like the wobble of the Earth’s axis.

It was an inclinometer used to determine the latitude of a ship at sea by measuring the sun's noon altitude (declination) or the meridian altitude of a star of known declination.

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Which two factors below make rapid and substantial blood loss life-threatening?
KIM [24]

Answer:

The correct answer is: d. loss of blood pressure and loss of oxygen-carrying capacity.

Explanation:

  • Blood is a liquid connective tissue which is the major component responsible for transporting nutrients and oxygen to all the cells in the body and for removing carbon dioxide and metabolic wastes from all the cells of the body.
  • When there is excessive blood loss, the total volume of blood in the body decreases far below normal. As a result of this the blood pressure (pressure applied by the blood on the walls of the arteries) decreases.
  • This is because the rate at which blood is lost is far more than the rate at which it is produced.
  • The decrease in blood pressure prevents the blood from travelling easily against the gravity, hence it is unable to reach all the regions of the body, thereby depriving many cells of nutrients and oxygen. The waste products are also not efficiently collected from these cells. This causes the cells in the deprived regions to die.
  • Blood carries the most important component required for respiration and metabolism, that is oxygen, in association with haemoglobin molecules. Excessive blood loss causes loss of haemoglobin as well. This can cause reduction in the oxygen-carrying capacity of blood. Hence the cells of the body are unable to carry out metabolic activities properly due to the dearth of oxygen. This causes the death of cells.
  • Excessive death of cells causes tissues to become non-functional and that can cause organ failure. Multiple organ failure can pose severe threat to life.
6 0
3 years ago
Sugar is a component of which of the following?<br><br> carbohydrates<br> lipids<br> nucleic acids
Jet001 [13]

Answer:

carbohydrates

Explanation:

The white stuff we know as sugar is sucrose, a molecule composed of 12 atoms of carbon, 22 atoms of hydrogen, and 11 atoms of oxygen (C12H22O11). Like all compounds made from these three elements, sugar is a carbohydrate. ... Sucrose is actually two simpler sugars stuck together: fructose and glucose.

4 0
3 years ago
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A rapid method of speciation that has been important in the history of flowering plants is
Margarita [4]

Answer:

Polyploidy

Explanation:

Polyploidy can be defined as a rapid method of speciation that has been important in the history of flowering plants.

In plants, it involves the possession of two complete sets of chromosomes and it leads to the origin of new species.

Hence, the two sets of chromosomes comprises of triploidy (69 chromosomes) and tetraploidy (92 chromosomes).

8 0
3 years ago
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If a 50kg car is pulling a 30kg car, how much force would be required to accelerate the cars at 2m/s/s?
Lemur [1.5K]

Answer:

the force needed to accelerate the 1000kg car by 3m/s2 is 3000N .

3 0
3 years ago
Please help jdixnwjdj
Ksivusya [100]

Answer: Homeostasis

Explanation: One way that a cell maintains homeostasis is by controlling the movement of substances across the cell membrane. The lipid bilayer is selectively permeable to small, nonpolar substances. Proteins in the cell membrane include cell-surface markers, receptor proteins, enzymes, and transport proteins.

6 0
3 years ago
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