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qaws [65]
2 years ago
7

How have scientists determined the earth's core is composed of iron and nickel?

Biology
1 answer:
Sedaia [141]2 years ago
8 0
<span>The correct option from the given options is: "Scientist have determined the composition of Earth's core by using radiometric dating to examine meteorites".
</span><span>To date materials the procedure of radiometric dating or radioactive dating is used, for example, rocks or carbon, in which trace radioactive impurities were specifically fused when they were framed. The strategy looks at the abundance of a normally happening radioactive isotope inside the material to the abundance of its decay items, which shape at a known consistent rate of decay.</span>
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If a molecule of CO2 released into the blood in your left toe is exhaled from your nose, it must pass through all of the followi
stepladder [879]

Answer:

a) the pulmonary vein

Explanation:

  • Veins are the blood vessels that carry blood to the heart.
  • Pulmonary veins are responsible for carrying oxygenated blood from the lungs back to the left atrium of the heart.
  • There are two right pulmonary veins, known as the right superior and right inferior veins.
  • The largest pulmonary veins are the four main pulmonary veins, two from each lung that drain into the left atrium of the heart.
  1. Artery: pulmonary artery
  2. Drains to: left atrium
  3. Drains from: lungs
  4. System: Circulatory system

6 0
2 years ago
Royal Bengal tigers live in forests in South Asia. These tigers are categorized as endangered species. The population of these a
Alisiya [41]

Answer:

The first blank can be filled with tagging. One of the procedures for studying the movements, biology, and migration of animals is known as tagging of animals. Tagging is utilized to examine the long-range irregular and regular movements of animals and to identify their life-span. All kinds of mollusks, vertebrates, and insects can be tagged.  

The second blank can be filled with designate their area as a national park. Designation of the areas as a national park is one of the methods of conserving animals, like a tiger.  

Explanation:

6 0
2 years ago
Read 2 more answers
The specific heat of a metal is 0.5 cal/ (0C.g). The heat required to raise temperature of 100 gram of that metal by 20 0C is
MAXImum [283]
<span>The specific heat of the metal is 0.5 cal/ (0C.g). This means the energy needed is 0.5 cal to raise the heat of 1 gram of metal by 1 degree C. Therefore, the energy needed to raise 100 g of the metal by 20 degrees C is:
0.5 * 20 * 100 = 1000 cal.


</span>
4 0
2 years ago
you go out to dinner with your best friend. during dinner you consume the following meal: spinach green with sunflower seeds, a
Georgia [21]

Answer:

The biology Molecules that will.be present in what she consumed are Carbohydrates from unbuttered bread, vitamins green spinach, Fat and oil or lipids from sunflower seeds, proteins...

The Carbohydrates is processed into glucose, proteins is processed into amino acids, lipids is processed into fatty acids and glycerol.

Explanation:

From the food consumed, The biology Molecules that will.be present in what she consumed are Carbohydrates from unbuttered bread, green spinach contains vitamins like vitamin K, vitamin A, vitamin C, vitamin B12 , minerals like magnesium, iron, Fat and oil or lipids from sunflower seeds, proteins...

The Carbohydrates is processed into glucose after enzymes like salivary amylase acts on it from the chewing and in the stomach which produces glucose which makes it easily absorbable , proteins is processed into amino acids by the activity of hydrochloric acids and protease that processed it into amino acids, lipids is processed into fatty acids and glycerol by the activities of the enzymes lipase.

The minerals and vitamins present are in a way they can be absorbed.

8 0
2 years ago
In multicellular organisms,the cell cycle produces groups of cells that perform the same function. What are these cells called?
Anon25 [30]
Organs, cells with the same function make up tissue and tissue makes up the organ 
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2 years ago
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