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klemol [59]
3 years ago
8

A family that has no elements found in the earths crust

Biology
2 answers:
gayaneshka [121]3 years ago
8 0
<h2>Answer:</h2>

Family of Synthetic Elements

<h2>Explanation:</h2>

In chemical Sciences a synthetic element is a chemical element that does not occur naturally on Earth, and it can only be created artificially in the laboratory. So far, 24 synthetic elements have been created in the laboratory and their atomic numbers lie from 95–118.

damaskus [11]3 years ago
8 0

Answer:

The answer is Synthetic elements.

Explanation:

Synthetic elements are those chemical elements that do not appear naturally on Earth, and can only be created artificially. These synthetic elements were not known to mankind until they were synthesized. They are radioactive elements, that is, unstable, with short half-lives compared to the age of the planet. Therefore they disintegrated almost completely since the formation of the Earth, and they are not found in appreciable quantities except for human action, produced in nuclear reactors or particle accelerators.

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<h3><em>D </em>seems less important so I’m guessing it’s, D</h3>

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Define mutation and compare gene mutation and chromosomal mutation
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In biology, a mutation is an alteration in the nucleotide sequence of the genome of an organism, virus, or extrachromosomal DNA. Viral genomes contain either DNA or RNA.

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3 years ago
What animal filled the role of top predator in yellowstone before wolves were reintroduced?
mixer [17]

Answer:

Explanation:

El Parque Nacional de Yellowstone (Estados Unidos), considerado el parque nacional más antiguo del mundo, fue creado en 1872 durante la presidencia de Ulysses S. Grant. En sus inicios, la fauna del parque no recibió la misma protección que hoy en día: los lobos y los pumas fueron eliminados deliberadamente en 1926 y, al cabo de unos años, la población de ciervos aumentó tanto que los administradores del parque reconocieron que los herbívoros estaban alterando la vegetación, por lo que se realizaron matanzas selectivas para controlar la población de dichos animales. Las matanzas selectivas terminaron a finales de los años 60 y la población de ciervos volvió a aumentar, por lo que finalmente se optó por reintroducir el lobo: 14 lobos de la provincia de Alberta (Canadá) fueron liberados en 1995 y otros 17 lobos canadienses en 1996. "La reintroducción del lobo (Canis lupus) en el Parque Nacional de Yellowstone es el experimento ecológico más celebrado de la historia", así comienza un estudio publicado en Journal of Mammalogy por Mark Boyce, de la Universidad de Alberta.

7 0
4 years ago
Paul is outside his grocery store protesting GMO foods not being labeled. What is a gmo food? Do you agree or disagree with Paul
Feliz [49]

Answer:

'Genetically modified organisms' are organisms which have been altered genetically using genetic engineering. Genetically modified foods should be labelled since they allow the user to understand and to give them the choice to either eat them or not.

Explanation:

<u>Genetic engineering</u> is the process by which GMO are produced. Genetic engineering allows changes to be made at genetic level where new sequences of genes are introduced or deleted though techniques like <em>selective breeding</em> or <em>mutation breeding</em>.

Certain advantages and disadvantages of genetically modified food are stated below:

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  • The crops are also made resistant to pests and insects.
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Disadvantages of GMO:

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Foods must be labelled since there might be health issues caused by them. The nutritional value of the food might be changed which should be observed if it is to be given to infants.

5 0
3 years ago
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sleet_krkn [62]
Hello There :D

Answer: <span>B. hypothalamus
</span>
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I hope I helped
-Chris
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