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snow_tiger [21]
3 years ago
10

Explain what the sun is and how it differs from other stars we see in the sky.

Biology
2 answers:
MrMuchimi3 years ago
4 0

hi there

your answer to this response is

The sun is a star. It is different from other stars from the stars that we see in the sky because the sun gives off energy so that there can continue to be living things. The sun is also much closer than the other stars in the sky. The sun is made up of hydrogen gas.

the other stars in the sky are  in different galaxys this  how they are different to  our sun. and our sun is half way in its life and there a lot more years for it to go.

i hope this helps you out

i have a great afternoon

FaithRawlins14

masha68 [24]3 years ago
3 0

Our sun is a hot and shiny ball of hydrogen and helium in the center of our solar system. It is 1,392,000 km in diameter, which makes it 109 times wider than Earth. The surface temperature reaches 5,500 degrees Celsius, and 15,000,000 degrees Celsius in the core.

Turns out our sun is a medium-sized star. There are bigger stars and there are smaller stars. We find stars that are 100 times larger in diameter than our sun. Truly, these stars are huge. We also saw stars only a tenth the size of our sun.

Our sun is a little unusual because it has no friends. It is just a sun surrounded by planets, asterioids, comets and dwarf planets. But solar systems can have more than one sun. In fact, this is often the case. More than half of all stars are in multiple star systems. This means that the solar system has two or more suns in it.

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mylen [45]

Answer:

See the answer below

Explanation:

Using the formula for calculating Chi square (X^2):

X^2  =  \frac{(O - E)^2}{E} where O = observed frequency and E = expected frequency.

The observed frequencies for the four phenotypes are 88, 62, 62, and 81 respectively.

For the expected frequency, the phenotypes are supposed to assort in 9:3:3:1 according to Mendel ratio.

Hence, expected frequencies are calculated as:

phenotype (1) = 9/16 x 293 = 164.81

phenotype (2) = 3/16 x 293 = 54.94

phenotype (3) = 3/16 x 293 = 54.94

phenotype (4) = 1/16 x 293 = 18.31

The X^2 is calculated thus:

Phenotype            O               E                             X^2

  1                          88            164.81            \frac{(88 - 164.81)^2}{164.81} = 35.80

  2                          62             54.94            \frac{(62 - 54.94)^2}{54.94} = 0.91

  3                           62             54.94              \frac{(62 - 54.94)^2}{54.94} = 0.91

  4                            81              18.31               \frac{(81 - 18.31)^2}{18.31} = 214.64

Total X^2 = 35.80 + 0.91 + 0.91 + 214.64 = 252.26

To the nearest tenth = 252

Degree of freedom = n - 1 = 4- 1 = 3

X^2 tabulated  = 7.815

<em>The calculated </em>X^2<em> exceeds the critical value, hence, the null hypothesis is rejected. The two genes did not assort independently.        </em>

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