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amm1812
3 years ago
14

In studying the origin of the universe, one of the primary unanswered questions is _____. what type of elements formed first app

roximately how long ago it occurred how long it took the earth to form what came before the big bang
Biology
2 answers:
Virty [35]3 years ago
4 0

Answer:

In studying the origin of the universe, one of the primary unanswered questions is <u>what came before the big bang.</u>

Explanation:

The big bang theory can be described as a theory which scientists have proposed to explain how the universe came into existence. This theory predicts how the extremely hot temperatures and dense atmosphere might have given rise to the stars and the galaxies.

Scientists have no idea what happened before the big bang theory. Some scientists predict that there might be another universe which collapsed before the big bang theory. While other scientists claim that there was nothing before the big bang.

Alex73 [517]3 years ago
3 0

Answer:

What came before the big bang.

Explanation:

The Big Bang Theory is a model for the origin of the universe. The model describes the change that the universe has gone through from its conception. It argues that the universe expanded from a high-density and high-temperature state. However, one of the questions that remain unanswered is what came before the Big Bang, as we do not have the knowledge yet to determine whether this event was primordial.

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irinina [24]

Answer:

1. Hydraulic Dam

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8. Scrap Yard

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Explanation:

Hope this helps!

7 0
2 years ago
Read 2 more answers
HELP ME ASAP!!!!!!!!!!!!!!!!
fredd [130]

28. <u>Answer</u>: All mutations do not affect the organisms due to the following reasons:-

1. The DNA consists of both coding and non coding regions. The coding regions are known as exons and non coding regions are called as introns. The <em>non coding regions </em>do not make up the protein. Thus, if the mutations occur in non coding regions they do not affect the organism.

2. There are some mutations that result in the change of the codon but the new codon formed codes for the same amino as the previous one. This is possible because of the degeneracy of genetic code. For eg, AAA codes for lysine, however if the mutation changes this code to AAU then this also codes for lysine. Such mutations are called as <em>silent</em> mutations.

3. There are some mutations which result in the change in amino acid however the new amino acid formed is similar to the previous one in its properties for e.g leucine and isoleucine. Such mutations are called as <em>neutral</em> mutations and they do not affect the organism


29. <u>Answer</u>: 1. The process of mitosis results in the formation of <em>two diploid cells</em> whereas meiosis results in the formation of <em>4 haploid cells.</em>

2. The process of mitosis takes place to produce copies of the <em>body cells </em>whereas the process of meiosis takes place to produce the <em>gametes</em>.

<u>Explanation</u>:-

  • <u>Mitosis</u> is a process in which a cell undergoes a single round of division to produce two identical copies of itself . It occurs in 4 phases Prophase, metaphase, anaphase and telophase. This process occurs in the body cells.
  • <u>Meiosis</u> is a process in which a cell undergoes two rounds of cell division to produce 4 copies of haploid cells from a single diploid cell. This process takes place for the formation of gametes.

29. <u>Answer</u>:

<em>Pros</em>

1. Genetic engineering helps us to tackle several diseases. There are many diseases which are caused due to genetic mutations. Genetic engineering helps us to rectify these mutations and hence combat such diseases.

2. Genetic engineering helps us to produce new foods which can withstand adverse conditions such as high/low temperatures, low rainfall, are disease and pest resistant etc. This, genetic engineering helps to significantly improve crop production.

<em>Cons</em>

1. Genetic engineering leads to a decrease in genetic diversity.

2. It can lead to a decrease in the nutritional value of food as genetic engineering often causes an accelerated growth of animals and hence, the nutritional valie of poultry foods is compromised.


3 0
3 years ago
Pls answer this guys
Simora [160]

Answer:

D.None of the Above

Explanation:

Hope it helps you

7 0
3 years ago
Kyle is holding a bag of 250 jelly beans. When Mark takes out two jelly beans, Kyle is not able to tell a difference.
Fudgin [204]

Answer:

Sensory adaptation.

Explanation:

Hello.

In this case, after the removal of the two jelly beans, Kyle has now 248 jelly beans which is a slightly neglectable difference, it means that the answer is sensory adaptation since it refers to a decrease in the sensitivity to a stimulus due to the constant exposure to it, which also reduces our awareness when a neglectable change happens.

This is proved since Kyle was constantly holding the bag so a difference of two jelly beans will be almost neglectable making the sensory adaptation the reason behind this.

Regards.

4 0
3 years ago
Determine whether the following statement is true or false, and why. “The endocrine system releases products into the bloodstrea
Ivenika [448]

The endocrine gland is the one that is ductless an release its secretion directly in bloodstream example liver, pancreas, etc.  The given statement is true and the correct option is B.

<h3>What is endocrine gland's secretion called?</h3>

The secretion of endocrine gland is referred to as hormones, which are chemical messengers that helps in body's control and coordination.

The endocrine gland is the one that is ductless an release its secretion directly in bloodstream example liver, pancreas, etc.

Thus, the given statement is true and the correct option is B.

For more details regarding endocrine gland, visit:

brainly.com/question/11312688

#SPJ1

6 0
2 years ago
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