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Scorpion4ik [409]
3 years ago
7

What is the first branch of the right coronary artery?

Biology
1 answer:
ZanzabumX [31]3 years ago
3 0
Right marginal artery
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Did humans cause the drought in São Paulo?
Strike441 [17]

Answer:

São Paulo is a city in Brazil that faced the worst drought in Brazil in the last 100 years between 2014–17.

The reason of the drought was diminished rain falls from last three third consecutive year in the region. Humans were somewhere responsible for the drought and less rainfall because this was caused by expansion of deforestation into the Amazon basin. Deforestation disturbed the environmental cycle that caused less amount of rain in São Paulo, Brazil.

7 0
3 years ago
1. If there is not enough carbohydrate intake, how does the body form glucose?
Amiraneli [1.4K]

1.

  • Glycogenolysis(break down of glycogen to glucose molecules)
  • Gluconeogenesis(generation of glucose from certain non-carbohydrate carbon substrates such as lipids)

2.

  • It can make glucose and then use that
  • Use lipids(some organs such as the brain can’t use lipids as their energy source and need glucose)

Hope this helps:))

7 0
3 years ago
In humans, methylation of chromosomal DNA is a signal that often leads to
Ulleksa [173]

Answer:

The correct answer will be option-formation of heterochromatin

Explanation:

Methylation of DNA is the epigenetic mechanism which controls the expression of a gene by adding a methyl group to the cytosine bases in eukaryotic DNA.

The methylation of DNA converts the cytosine residues to the  5-methylcytosine catalysed by DNA methyltransferase enzyme. This results in the silencing of the gene and transcription get switched off.

Studies have shown that DNA methylation is involved in the formation and maintenance of the heterochromatin structure which is the condensed form of the chromatin in which transcription is switched off.

Thus, the formation of heterochromatin is the correct answer.

7 0
3 years ago
1. How did you revise your sequence from your initial idea ? Explain how you decided on the sequence. For the Natural Selection
liberstina [14]

Natural selection is the idea that  organisms that posses favorable traits that enable them to survive in their environment are the ones that live long enough to pass on these traits to their offspring.

<h3>What is natural selection?</h3>

The question is incomplete but I will try my best to explain the idea of natural selection.

The term natural selection refers to the idea put forward by Charles Darwin that organisms that posses favorable traits that enable them to survive in their environment are the ones that live long enough to pass on these traits to their offspring. This is also called the survival of the fittest.

Learn more about natural selection: brainly.com/question/2725702

8 0
2 years ago
Make a claim about how the body's external defenses help to prevent diseases.
harina [27]

Skin prevents the body from getting infections

6 0
3 years ago
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