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Serhud [2]
1 year ago
7

Petroleum is a natural resource that is found below the surface of the Earth. Petroleum is unevenly distributed on Earth, but it

is most often found in petroleum traps, which are underground rock formations that block the movement of petroleum.
Which of the following best describes what must have happened in the past in an area with a large petroleum trap?
A.
Permeable underground rock formations must have allowed the movement of organic matter deep into the Earth. Then, the organic matter must have been exposed to freezing temperatures until it formed petroleum.
B.
Impermeable underground rock formations must have blocked the movement of organic matter through the Earth's surface. Then, the organic matter must have decomposed to form petroleum inside the rock formations.
C.
Organic matter must have been exposed to intensely cold temperatures until it became petroleum. Then, the petroleum must have moved up to the Earth's surface through permeable underground rock formations.
D.
Organic matter must have been buried and placed under intense heat and pressure until it became petroleum. Then, the petroleum must have collected inside an impermeable underground rock formation.
Biology
1 answer:
masya89 [10]1 year ago
7 0

Answer:

The answer is D.

Explanation:

Remember heat and pressure.

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Your answers are going to be: Will succeed, Will reevaluate, and Will create.

Reason: Had is past tense and Has is present tense. Will is the only word that indicates that the actions <em>will be done</em> in the future instead of having already <em>been done.</em>

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NADH and FADH2 are both electron carriers that donate their electrons to the electron transport chain. The electrons ultimately
maria [59]

Answer:

Explanation:

NADH and FADH2 are both electron carriers of the electron transport chain. NADH gives up its electrons starting from Complex I, which has a higher energy level compared to other complexes. Energy is given off to pump protons across the membrane by the time electrons are transferred to ComplexIII. More electrons are pumped across the membrane as electrons move to Complex IV. Because NADH commenced giving up its electrons from Complex I (higher energy level complex), more protons are pumped across the membrane gradient, which enables ATP synthase with more power to produce 3ATP molecules per NADH molecule.

On the other hand, 2 molecules of ATP are generated by FADH2 because it starts by giving up its electrons to ComplexII. It missed a chance to pump protons across the membrane when it passed Complex I. By the time the electrons reach Complex IV, less protons have been pumped. The lesser the protons to power ATP synthase, the lesser the ATP molecules produced.

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2 years ago
In the Florida Everglades, Burmese pythons are an invasive species. They were introduced into southern Florida in 1992. These py
Verdich [7]

Answer:

B - Python predation has caused a trophic cascade that changed the mosquitoes' niche.

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The passage infers that the predation by the Burmese pythons has reduced the population of the animals in Southern Florida thus making the Culex cedecei mosquito to have a reduced number of options to feed from. This is stressed when the author notes that these mosquitoes are now feeding on cotton rats which harbor the Everglades virus that also have the potentials of being transmitted to humans.

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7 0
1 year ago
Match each definition to the appropriate term. locus
liraira [26]
I) Locus- the chromosomal site where a specific gene is located. A locus is a fixed position on a chromosome, like the position of a gene or a marker. Each chromosome carries ,many genes; human's estimated haploid (n) protein coding genes are about 20,000, on the 23 different chromosomes.


ii) Interference; the observed double crossover frequency differs from the expected double crossover frequency. Cross over interference is used to refer to the non-random placement of crossovers with respect to each other during meiosis. It results in widely spaced crossovers along chromosomes. Interference may exert its effect across whole chromosomes. As chromosomes in many eukaryotes are large, interference must be able to act over megabase lengths of DNA. 

iii) Linkage- the tendency for genes located in close proximity on the same chromosome to be inherited together. Normally when two genes are close together on the same chromosome, they do not assort independently and are said to be linked. Whereas genes located on different chromosomes assort independently and have a recombination frequency of 50%, linked genes have a recombination frequency that is less than 50%.

iv) Recombination- the process by which a new pattern of alleles on a chromosome is generated. Genetic recombination is the production of offspring with combinations f traits that differ from those found in either parent. During meiosis in eukaryotes, genetic recombination involves the pairing of homologous chromosomes. This may be followed by information transfer between the chromosomes. 
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2 years ago
Trinna and Suzanne are identical twins who were the same length at birth. They were adopted by different families at birth and t
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Answer:

The best method of investigation that a scientist can use in an investigation of twins separated at birth - as in the case of Trinna and Suzanne - is a case study.

Explanation:

The case study is a qualitative research strategy that can be used in both biology, psychology and sociology, even combining these disciplines. Take an observed phenomenon, sometimes unique, looking for an explanation based on the examination and the elaboration of hypotheses.

Trinna, despite being an identical twin, developed a shorter stature and habits different from Suzanne, probably due to her growth in different environments.

The objective of the case study would be to demonstrate how the growth of twins in different settings may have caused physical and cultural differences in these identical twins.

Learn more:

Case study brainly.com/question/5167644

5 0
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