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tekilochka [14]
2 years ago
12

Why is the Earth’s core made up mainly of iron while the crust contains mostly silicate minerals?

Biology
2 answers:
inn [45]2 years ago
8 0
Correct answer:
"<span>D. because iron is denser than silicate minerals"

Considering the formation of the Earth. We know that Earth's mass was formed by accretion. Over time, many many years, the material started to be organised by densities thanks to gravity. The Earth's core is mainly made out of iron because iron is denser than silicate materials which are the most common on the Earth's crust. </span>
solong [7]2 years ago
3 0
B. is the answer 
i hope
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Which of the following lists, in correct order, the phases of interphase? View Available Hint(s) G1, A) prophase, and S Prophase
Lady_Fox [76]

Answer:

G1 - S - G2 (may be is option D)

Explanation:

The interface begins with phase G1 where the cell increases its volume and the mass is doubled.

Then, we continue with the S phase where DNA and histones are synthesized.

Afterwardsy we reach the G2 phase where the chromosomes are duplicated.

Finally we reach, the begining of mitosis.

5 0
2 years ago
A teacher brings 3 gallons of juice on a field trip. There are 36 students on the trip.
Lera25 [3.4K]
There are 384 fluid ounces in 3 gallons. The teacher does not have enough for each student to have 12 fluid ounces.

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4 0
1 year ago
A true-breeding plant that produces yellow seeds is crossed with a true-breeding plant that produces green seeds. The F1 plants
nadya68 [22]

Answer:

The phenotypic ratio will be 3:1

Explanation:

As per this question there are two phenotypes for seed color, yellow and green. Both the parents are true breeding that means they are homozygous for this trait. Also, all the F1 plants have yellow seed color which clearly indicates that yellow seed color is a dominant trait while green is recessive trait.

The cross of true breeding plants as mentioned above is depicted as under:

Parents                             YY    x   yy

                                          /   \       /   \

F1 generation                Yy   Yy  Yy   Yy

So, as per the law of dominance because of the presence of Y allele, all these progeny will be yellow in color.

Next, when these F1 plants will be crossed, the result will be as under:

F1 generation                    Yy   x    Yy

                                         /   \         /   \

F2 generation               YY   Yy   Yy   yy

The genotypic ratio of F2 generation is 1:2:1

The phenotypic ratio of F2 generation is 3:1

It simply means that in F2 generation, 3 progeny which have allelic combination YY & Yy will be yellow colored while 1 progeny which has allelic combination yy will have green color.

8 0
2 years ago
A teacher asks her students to find the average mass of a chicken egg. Each student is provided a carton of a dozen eggs and is
ad-work [718]

If you have all the eggs weighed at different times and then write them down, after that add all of the number together. Divide the number by the amount of eggs. BOOM ANSWER!

8 0
2 years ago
Read 2 more answers
Because the universe is expanding what happens to light from other galaxies when it reaches earth? A. it is brighter B. it is di
zepelin [54]
D.it is red shifted
is the correct answer....

red shifted light means object in space are receding away from us....



HOPE IT HELPS YOU '_'
7 0
1 year ago
Read 2 more answers
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