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3 years ago

According to scientific data and analysis, what led to the formation of the early atmosphere of Earth?

1 answer:

8 0

When Earth formed 4.6 billion years ago from a hot mix of gases and solids, it had almost no atmosphere. The surface was molten. As Earth cooled, an atmosphere formed mainly from gases spewed from volcanoes. It included hydrogen sulfide, methane, and ten to 200 times as much carbon dioxide as today's atmosphere. So it would be Outgassing. Hope that helped :)

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Which process does the diagram represent

Tanya [424]

Where’s the diagram?

7 0

3 years ago

Which element is most likely to replace hydrogen in a displacement reaction?

LUCKY_DIMON [66]

Answer: The correct option is (D) lithium (Li).

Explanation: Hydrogen is the element which belong to period 1. The atomic number of hydrogen is, 1

The electronic configuration of hydrogen is,

The number of valence electrons present in hydrogen is, 1.

(A) Helium is the element which belong to period 1. The atomic number of helium is, 2

The electronic configuration of helium is,

The number of valence electrons present in helium is, 2.

(B) Oxygen is the element which belong to period 2. The atomic number of oxygen is, 8

The electronic configuration of oxygen is,

The number of valence electrons present in oxygen is, 6.

(C) Nitrogen is the element which belong to period 2. The atomic number of nitrogen is, 7

The electronic configuration of nitrogen is,

The number of valence electrons present in nitrogen is, 5.

(D) Lithium is the element which belong to period 2. The atomic number of lithium is, 3

The electronic configuration of lithium is,

The number of valence electrons present in lithium is, 1.

From this we conclude that the lithium element has the same number of valence electrons as hydrogen.

Hence, the correct option is (D) lithium (Li).

3 0

3 years ago

which processes make energy for human cellular respiration, lactic acid fermentation, alcoholic fermentation, ATP, and photosynt

leonid [27]

Oxidative Phosphorylation is the metabolic process needed to provide energy for the cell. It is the final stage in the process of cellular respiration, where acetyl CoA produce energy precursors that leads to the phosphorylation of ADP, producing adenosine triphosphate (ATP) and in return provide energy. Moreover, when the body lacks oxygen, fermentation happens. During glycolysis, only two ATP molecules are produce and the pyruvate is reduce to NADH forming lactate. Meanwhile, in alcoholic fermentation pyruvate is converted to ethanol, releasing CO2. Lastly, the co-enzyme that is involved in photosynthesis is NADP+ where extra phosphate group is attached.

8 0

3 years ago

The immediate product of transcription is ________. The immediate product of transcription is ________. a protein an amino acid

AlekseyPX

Answer:

RNA

Explanation:

Transcription is the first process of protein synthesis and it involves copying the information encoded in the genetic material (DNA) to a RNA molecule. It involves making a complementary strand of mRNA from a DNA template.

The process of transcription commences when an enzyme called RNA polymerase binds to the promoter region of a gene on the DNA, signalling the unwinding of its double-stranded structure. The RNA polymerase then adds nucleotides to the growing RNA molecule, complementary to the ones it reads on the DNA. The RNA synthesized during transcription is called messenger RNA (mRNA).

The mRNA is then used as a template for amino acids synthesis during translation.

4 0

3 years ago

Can someone help me!!!

JulsSmile [24]

The answer is B, they were not overlapping in range, so they evolved and became not identical.

3 0

3 years ago