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Advocard [28]
3 years ago
13

Which two events occur when gravity causes a nebula to collapse into itself?

Biology
1 answer:
blsea [12.9K]3 years ago
3 0

The two events that occur  when gravity causes a nebula to collapse into itself are:

A. Nuclear fusion start.

B. A new star forms.

Explanation:

  • Nebula are giant clouds of dust and gases.
  • These clouds are considered as progenitors of stars and planets.
  • The gravitational pull within these giant clouds result these large masses to collapse towards their centre.
  • The gravitational collapse results in tremendous rise in temperature till a point where nuclear fusion begin .
  • The stars are born out of such mechanism and act as a source of heat and light in universe.
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Genetic engineering is the process of manipulating genes for practical purposes. Today, scientists have genetically engineered m
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Genetic engineering is the process of manipulating genes for practical purposes. today, scientists have genetically engineered many types of organisms including crop plants. which of the following is a current benefit gained from genetically engineered crops? a. some genes can be transferred to wild plants in the area. b. some animals develop allergies to the genetically engineered crops. c. some food staples, such as rice, contain more nutrients. d. some disease resistant fruits and vegetables are less flavorful.

Answer:

. b. some animals develop allergies to the genetically engineered crops. c. some food staples, such as rice, contain more nutrients

Explanation:

Rice is global staple food. It is mostly affordable by the poor and peasant farmer wordwilde.Vitamin A is an important vitamin for good eye sight and also for boosting the  immunity.

This useful vitamin is  present in eggs, cheese and liver. Which are expensive for poor families Some small quantity are produced as carotene found in carrot. However, a precursor of Vitamin A called Pro-vitamin A carotenoids  is present in the part of rice called the Aleurone layer.

However this part of the rice is not in the endosperm thus the vitamin are washed way during processing of white rice .Although this is present in brown rice. Basically, the energy storage in most crop seeds is stored in the endosperm. Thus the vitamin in the rice are not stored are therefore not imbibe during consumption.

Therefore in order to incorporate  carotenoid into the endosperm to avoid been wasted, Daffodil was used. The genes for the transcription of carotene in daffodils and from  particular soil bacteria called Pantoea Anantis were extracted, to transfer carotenoid into the rice endosperm. This is called the Golden rice,, because the rice appear golden from the incorporation of the carotenoid into the endosperm though genetic engineering. This appear orange from the carotene pigment present in the endosperm.

Thus from the consumption of the rice ,poor family could imbibe vitamin A into their diet.

5 0
3 years ago
Genetically speaking, brown eyes (B-) are dominant to blue eyes (bb). However, an individual can wear colored contacts in order
svp [43]

Answer:

all children will have brown eyes or 50 percent will have blue eyes and 50 percent will have brown eyes.

Explanation:

1. first reasoning if the mother has homozygous. This is because when you set up a punnett square. your outcomes will be Bb, Bb, Bb, and Bb. That means that each child will have brown eyes.

2. 2nd reasoning is if the mother is heterozygous. This is because when you do a punnet square, your outcomes will ne Bb, Bb, bb, bb. This means that 50 percent will have brown eyes and 50 percent will have blue eyes.

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3 years ago
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Minerals are micronutrients required by the body for various key functions. The mineral is required to carry oxygen in the blood
Mumz [18]
The answer to this question would be: Iron

Iron or Fe is the minerals that used in hemoglobin that binds oxygen or carbon dioxide in red blood cells. Deficiency in iron can lead into lower hemoglobin, thus lowering the oxygen delivery to the body tissue. Iron-rich food would be red meat like chicken or beef and spinach.
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4 years ago
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Why did scientists struggle for thousands of years to accurately describe the solar system?
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Answer:

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