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Yuri [45]
3 years ago
5

NEED HELP ASAP! WILL MARK BRANLIEST!

Biology
2 answers:
zhannawk [14.2K]3 years ago
4 0

Answer:

Hello, There! My Name is Rocky and I'm here to help! <3

Which of these is an environmental effect of deforestation?

The Answer would be C. Soil erosion! <3

Explanation:

Deforestation means the destruction of trees, and trees have roots, roots which hold the ground in place,

Hope this helps!

daser333 [38]3 years ago
3 0

Answer:

<em>Soil erosion</em>

Explanation:

<em>I hope this was correct! pls give me brainliest if it was it would be appreciated if not thats fine! <3</em>

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Blood flow will increase as blood vessels expand.

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3 years ago
About 3 million years ago, the Isthmus of Panama (a narrow strip of land connecting North and South America) formed, dividing ma
lilavasa [31]

Answer:

Allopatric speciation

Explanation:

Allopatric speciation refers to the geographic separation of a continuous genetic background, originating two or more new geographically isolated groups. These divergences of the original population might be related to migration in different directions, extinction of geographically intermediate populations, or geological events. During these events of speciation, emerging new barriers impede genetic flow between groups, as the two new populations that are separated can not get together and mate anymore. These barriers might be geographical or ecological.  

Different stages are involved in the allopatric speciation process:

• The emergence of the barrier.  

• Interruption in the genetic flow

• Slow and gradual differentiation due to the occurrence of mutations in each population and their accumulation in time.  

• Genetic divergence by natural selection and reproductive isolation,  impeding the two groups to mate even if the barrier disappears.  

• Prezigotic isolation mechanisms favored by selection a secondary contact between the new species occurs.

The Panama isthmus is an example of allopatric speciation caused by an extrinsic geological barrier that interrupted the genetic flow between species driving to genetic changes and reproductive isolation.  

Two different groups that evolved in allopatry might meet again in secondary contact if the barrier that separated them, disappears. In the Panama isthmus example, the groups that did mate, could not produce any fertile progeny because of postzygotic reproductive isolation. And the groups that did not mate, were not attracted to each other because of prezygotic reproductive isolation.  

4 0
3 years ago
In the picture, the stomata on the underside of the leaf will ____________ when the turgor pressure within the guard cells incre
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And the answer is  C. open fully
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4 years ago
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What do food chains demonstrate? What do they tell us about energy?
saul85 [17]

Answer:

Explanation:

They demonstrate the flow of energy from one thing to the next. They tell us Energy is a non-stop force.

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What are some ethical issues related to cloning?
Keith_Richards [23]

Answer:

A preocupação com a abordagem das questões éticas dos processos de clonagem não é recente. Desde a década de 1970 vários autores tem discutido diferentes questionamentos a respeito dos aspectos éticos envolvidos.

Quando se fala de Clonagem Humana, a maioria das pessoas pensa logo na criação de seres humanos idênticos a outro, mas a clonagem humana não é só isso.

A Clonagem Humana pode ser reprodutiva ou não reprodutiva (terapêutica). A primeira tem por objectivo criar um ser geneticamente idêntico a outro, como um gêmeo. A segunda tem por base a criação de órgãos e tecidos para fins terapêuticos.

A Clonagem Humana é apoiada pelos cientistas, enquanto as políticas, as religiosas e as morais, criam barreiras para clonagem humana, as quais formam um dos grandes temas do questionamento ético actual.

Igreja católica defende a existência de vida humana, desde a fecundação, como algo divino. "A vida humana é um dom de Deus, só Ele é senhor da vida,”  Não é permitido, destruir um embrião para obter células tronco, nem abreviar a vida de um ser humano para extrair órgãos para um transplante, a fim de salvar outra vida. Assim, a clonagem com finalidade terapêutica é rejeitada pelo catolicismo, pois quando se trata de extrair células tronco de um embrião acaba-se infringindo o mandamento"Não matarás". "O embrião já é uma vida, que deve ser respeitada por inteiro.”

Segundo a Sociedade Bioética a Clonagem Humana é antiética, pois crê não ser preciso desenvolver embriões para depois destrui-los uma vez que afirma que existem técnicas alternativas para se obter células-mães, como por exemplo o aproveitamento das células do cordão umbilical dos recém-nascidos, que é repleto de células que podem ser utilizados para a regeneração de tecidos.

Já a Sociedade tem o medo de que um clone não seja um “indivíduo” mas meramente uma cópia de “carbono” de alguém criou um sentimento de ofença mental pois a representação mental foi rapidamente configurada a bebês produzidos numa “fábrica biológica”.

Explanation:

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