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AlexFokin [52]
3 years ago
12

Materials, such as sand and rocks, are constantly being added to land masses through the process of deposition. Deposition occur

s when the weights of the materials are greater than the forces that are transporting the materials.
Jeremiah sets up an experiment to better understand the process of deposition. In his experiment, he places a pile of sand at the top of a tube. Then, he pours water down the tube at varying speeds. Finally, he measures the amount of sand that is deposited throughout the tube.

What is the test variable (independent variable) in Jeremiah's experiment?

A.
the initial quantity of sand
B.
the speed of the water
C.
the type of tube that was used
D.
the quantity of sand in the tube
Biology
1 answer:
Alisiya [41]3 years ago
4 0

B.  the speed of the water

Explanation:

The independent variable here is the speed of the water being poured through the tube.

An independent variable is the variable is the whose change does not rely on another.

  • The speed of the water is the cause of the sand deposition.
  • This is the independent variable.
  • The quantity of sand that is deposited is the dependent variable.
  • It relies on the speed of the water.
  • The dependent variable is the effect of the speed of water being poured.

Lean more:

Experiment brainly.com/question/5096428

#learnwithBrainly

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Why the horses developed an oxygen debt when they exercised.
user100 [1]

Answer:

The horses developed an oxygen debt when they exercise because they suffered from Exercise-Induced Pulmonary Hemorrhage (EIPH).

Explanation:

A temporary shortage of oxygen in the body tissues during physical exertion such as exercise or a sudden burst of activity is referred to as oxygen shortage.

Horses (compared to humans) are uniquely designed to experience little or none of this.

When the body takes up oxygen, it reacts with glucose to produce energy. This is called Aerobic respiration.

There is also another procedure that the body uses to produce energy. This occurs when glucose is broken down in the cells. After this happens, lactic acid is created but cannot be stored in the body and must be expelled.

This interval when energy is produced without the presence of oxygen is called "oxygen debt".

When a horse is fit, its breathing quickly returns to normal. The longer the time taken for the breathing to return to normal, the less fit the horse is.

One of the factors that can reduce the fitness of a horse is the Exercise-Induced Pulmonary Hemorrhage (EIPH).

This occurs when blood vessle in the lung ruptures causing blood to bleed into the airways. So blood occupies space where oxygen should have. This reduced the amount of oxygen delivered to the blood stream. Hence the oxygen debt takes longer to be repaid.

Cheers

6 0
3 years ago
Examine the evolutionary tree below. this tree tells us that the amnion is found in ________.
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Answer:

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Explanation:

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