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QveST [7]
3 years ago
12

In your own words, explain how changes in the number of sunspots is related to changes in global climate.

Biology
2 answers:
Crazy boy [7]3 years ago
6 0
 <span>The theory is that sunspots protect the earth from gamma rays, and gamma rays are conducive to cloud formation and therefore sunspots reduce cloud cover. 

There's be quite a competitive debate over the base 4 years or so about this, especially between Denmark's Henrik Svensmark and British Mike Lockwood. One thing that came out of the debate is that if Svensmark is directionally correct, he initially over-stated the magnitude of overall temperature change due to sunspots. Svensmark finally clarified in 2009 that sunspots have had zero overall contribution to global warming, and that the year-to-year variations can be see only after applying a linear rate of global warming of 0.14 degrees per decade. To the degree that Svensmark is correct, the solar minimum has been masking a small portion of global warming over the past couple of years and will contribute to a warming peak in 2013. 

Lockwood on the other hand has theorized that sunspots affect annual regional weather rather than global temperatures. His work has shown that solar activity correlates strongly with weather in England and northern Europe.

</span>
Kobotan [32]3 years ago
4 0
<span>The sunspots are eruptions of heat and light energy emitting from the surface of the sun. These can increase our energy absorption many times above normal. Especially if it is pointed directly at the earth. These have been known to disrupt several bands in the radio spectrum and have knocked out communications of satellites. Naturally all this energy would have a great effect on our earth in many ways, climate included.</span>
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During a stressful interval, ________. During a stressful interval, ________. the posterior pituitary gland secretes more growth
velikii [3]

Answer:

Adrenocorticotropic hormone (ACTH) stimulates the adrenal cortex, and neurons of the sympathetic nervous system stimulate the adrenal medulla.

Explanation:

Hormones are the chemical messengers of the body and maintain the body's homeostasis in different adverse conditions. The hormones work by the feedback regulation system.

To overcome from the stress condition the body releases the hormone known as epinephrine. The receptors sense the stressful condition and adrenal cortex is stimulated by adrenocorticotropic hormone that results in the release of adrenaline hormone. The hormone activates the sympathetic nervous system of the body to cope with the fight and flight conditions.

Thus, the correct answer is option (2).

5 0
3 years ago
During protein synthesis which part of RNA is joined together to form a sequence for a functional protein? Exons, introns, both
Monica [59]
<span>During protein synthesis the exons are joined together to form a sequence of for a functional protein.
Before the mRNA can undergo the process of translation in the cytoplams it undergoes a process called RNA splicing. This process produces a 'final draft' of the mRNA before translation gets under way. The process involves the removal of introns (non-coding sequences) and joining of exons in eukaryotic mRNA.</span>
5 0
3 years ago
Read 2 more answers
MicroRNA (miRNA) production occurs in several steps. Arrange the statements describing the production and function of miRNAs in
zmey [24]

Answer:

The miRNAs act as post-transcriptional silencers, as they are similar to specific mRNAs and regulate their stability and translation. They are small endogenous non-coding ribonucleic acid (RNA) molecules, with about 22 nucleotides, which act as regulators of gene expression in plants and animals, at the post-transcriptional level through the cleavage of a target messenger RNA (mRNA) or repression of translation.

In general, most miRNA genes are transcribed by RNA polymerase II in the nucleus in primary miRNAs (pri-miRNAs). Individually, a pri-miRNA can produce a single miRNA or contain groups of two or more miRNAs that are processed from a common primary transcript. These long pri-miRNA are cleaved by a complex comprising the double-stranded RNAse III enzyme (DROSHA) and its essential cofactor, the binding protein DGCR8 (DiGeorge Syndrome Critical Region 8 protein) in mammals. DROSHA contains two domains of RNAse III, each of which cleaves a strand of the RNA resulting in the precursor microRNA (pre-miRNA) with about 70 base pairs, which contains a double-stranded stretch and a single-stranded loop, forming a structure in clamp. The pre-miRNA is exported to the cytoplasm by the protein exportin-5 (XPO-5), where it is cleaved by DICER1, an RNAse III that assesses the 3 'and 5' ends of the pre-miRNA, generating a mature miRNA with about 22 nucleotides. The processing of pre-miRNA by Dicer promotes the unfolding of the RNA duplex in the form of a clamp. The position in the formation of the clamp can also influence the choice of tape.

Explanation:

7 0
3 years ago
After DNA replication is completed, _____. After DNA replication is completed, _____.
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Each new dna double helix consists of one old dna strand and one new dna strand, daughter dna
4 0
3 years ago
(PLEASE ANSWER ASAP, WILL MARK BRAINLIEST)
noname [10]

The answers include the following:

  • Arrow F represents transpiration.
  • Matter is conserved through the process in which carbon from carbon dioxide leaves and enters into the atmosphere.
  • This process is a recycling of carbon in the carbon cycle because it involves it travelling the atmosphere into organisms in the Earth in a repeated manner.

<h3>What is Carbon cycle?</h3>

This refers to the  biogeochemical cycle in which carbon is  reused through different types of mechanisms and actions.

This process involves carbon travelling the atmosphere into organisms in the earth in a repeated fashion through methods such as respiration, transpiration etc which is how recycling works.

This is therefore the reason why it can be regarded as the process which involves matter and conservation and recycling.

Read more about Carbon cycle here brainly.com/question/12005308

#SPJ1

7 0
1 year ago
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