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Kamila [148]
3 years ago
10

What is vega? A- Fusing hydrogen at its core B-It has lost its outer shell and only retained hot core that is slowly losing its

brightness C- it’s temperature has decreased but it shining brighter than before
Biology
1 answer:
tatuchka [14]3 years ago
6 0

Answer: It is fusing hydrogen at its core.

Explanation: Main sequence stars fuse hydrogen atoms to form helium atoms in their cores. About 90 percent of the stars in the universe, including the sun, are main sequence stars.

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After the drought of 1977, researchers hypothesized that on the Galápagos island Daphne Major, medium ground finches with large,
Sveta_85 [38]

Answer:

Option (A).

Explanation:

Evolution may be defined as the change in the characteristics of a species over several generation with time. Natural selection acts as a main drivinf force for the evolution.

The drought of 1977 is responsible for the species evolution. The species is larger in this case (as mentioned in the question) and the species has deeper beaks over time. The birds have relatively large and deep beaks because they can easily crack the food.

Thus, the correct answer is option (A).

7 0
3 years ago
• ¿Qué factores son clave para el manejo correcto del microscopio compuesto u óptico cuando se observa una muestra?
leonid [27]

Answer:

1-Tener en cuenta el tamaño del objeto a observar para utilizar la lente con el aumento correcto (es decir, 10 X, 40 X o 100 X)

2-Utilizar aceite de inmersión para ver objetos en 100 X

Explanation:

El microscopio óptico posee lentes (ocular y objetivo) los cuales permiten ampliar la imagen del objeto observado. El microscopio simple y el compuesto representan dos tipos de microscopios ópticos. El microscopio compuesto es aquel que utiliza más de una lente para aumentar la imagen observada, mientras que el microscopio simple usa una sola lente (la cual se denomina lupa). El microscopio óptico puede utilizar un aceite de inmersión que permite aumentar la resolución de la imagen a través de la inmersión de la lente objetivo. Es importante señalar que durante el enfocado de la muestra se debe tener sumo cuidado de no acercar demasiado la lente a la superficie del cubreobjeto, ya que esta puede dañarse.

5 0
3 years ago
Earth's geochemical cycles remove and add materials, such as water and rock. The three main, interconnected geochemical cycles o
kompoz [17]
A geochemical cycle is the pathway that involves the movement of elements or substances in the Earth's surface and the crust.  I believe the answer are hydrologic, heat, and rock. These are the three main geochemical cycles of the Earth and are responsible of continuously removing and adding materials here on Earth.
8 0
3 years ago
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The more similar the DNA sequences of two species are, the more closely related the species are.
shepuryov [24]
I believe it is true.
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3 years ago
"which edible garden plants are appropriate for a phoenix warm-season garden?"
Rashid [163]

Peppers, watermelon, tomatoes and eggplant

Peppers, watermelon, tomatoes, and eggplant are appropriate for a phoenix warm-season garden. In order for these garden plants to grow well and produce crops, they need high temperatures with a little cooling at night and warm soil.






7 0
3 years ago
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