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3 years ago

When does a star start to die

Biology

1 answer:

rewona [7]3 years ago

4 0

Answer:

Several billion years after its life starts, a star will die. How the star dies, however, depends on what type of star it is. Stars Like the Sun. When the core runs out of hydrogen fuel, it will contract under the weight of gravity. However, some hydrogen fusion will occur in the upper layers. As the core contracts, it heats up.

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The neonate has a protruding tongue and a crease that transverses the entire width of each palm. the nurse recognizes that these

Drupady [299]

The neonate might have Down Syndrome. The protrusion of neonate's tongue might be because of his/her smaller mouth than usual and they also have weak suckling which might caused the protrusion. These two symptoms are usually seen in a child with Down Syndrome.

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4 years ago

What is the significance of Darwin's observations about the fossils he found in the mountains?

Novosadov [1.4K]

Darwins observations about the fossils support his theory of the tree of life which states we all derive from the same one spark of life. so when he found the fossils in the mountain and it closely resembled animals he had seen on his voyages so this made his hypothesis more believable.

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3 years ago

How can we get liquid water on mars

Liula [17]

Answer:

Through metal tanks with our strongest metal (tungsten)

Explanation:

if we started transfering over many tanks of it through rockets we could start an area that will be filled with the water. to keep the water from changing because of the new climate build a big round roof that is made out of Polycarbonate.

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3 years ago

Each sentence describes an interaction between two of Earth’s spheres. Match each sentence with the spheres that are interacting

galina1969 [7]

The answers would be the following:

Geosphere and hydrosphere - water vapor condenses on a glass.

Hydrosphere and biosphere - Grady swims in the ocean.

Biosphere and atmosphere - Lena takes a deep breath

Atmosphere and geosphere - gusty winds weather sandstone in the desert.

If you'd like to know why:

Geosphere involves the solid part of the Earth, so that would mean it involves the rocks, land, and the like.

Hydrosphere involves water, your clue there would be hydro, which means water.

Atmosphere involves the air around us, which includes winds.

Biosphere refers to the biotic components. Bio means life, so we consider living things here.

Now all those spheres interact with each other, and it is through this interactions that our world is formed and how our Earth is able to sustain life.

Taking into consideration the features of each sphere, you can see that Grady is a living organism and the ocean is made up of water.

Hence, hydrosphere and biosphere are interacting.

Lena is a living organism, and she is breathing in air.

Hence, biosphere and atmosphere are interacting.

Water vapor is made up of water, and glass is a solid found on Earth. (Not really a good example of interaction between these two spheres)

Hence, hydrosphere and geosphere are interacting. 

Lastly, gusty winds is part of the atmosphere and sandstone is a type of rock.

Hence, Geosphere and atmosphere are interacting.

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3 years ago

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Why do classification systems change over time?

Elina [12.6K]

Changes to the classification system have meant that the classification of some species of organisms has changed too. The system had to be changed to incorporate this new group or organisms.

Hope This Helped

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3 years ago

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