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a_sh-v [17]
3 years ago
6

How do massive stars change the atmosphere?

Biology
1 answer:
Inessa05 [86]3 years ago
5 0

The answer is: massive stars create a lot of heavier elements. They produce much of the carbon and oxygen which is hugely important for humans and water respectively.

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Roan coat color in cattle develops through incomplete dominance of the gene for red color and its allele for white. what crossin
slava [35]
<span>Roan is a combination of white hairs with red hairs. When we see cattle like this, they look pink because it resulted from a mix of white and red.

Red allele: A
White allele: a
</span>
<span>A heterozygotic animal has this genotype: Aa
Like i said previously this is the mixture of colors so the animal would be pink.

A red coat color has this genotype: AA
A white coat color has this genotype: aa

To get all the herd to be</span><span> roan-colored cattle the combination of parents should be: AA x aa. -> 100% roan
Another possible way to obtain would be</span><span>roan-colored cattle: Aa x Aa or aa x Aa (in this case there would be less probabable to obtain road).</span>
8 0
3 years ago
In a single organism, what do you notice about the relative proportions of dna bases?
kakasveta [241]
The awnser are A and D
7 0
3 years ago
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Should existing structures build from CCA-treated wood be removed?
stiks02 [169]
<span>Chromated copper arsenate, or CCA, is a pesticide that has been used for years in pressure-treating lumber to prevent destruction from rot and insects. Arsenic, a toxic chemical, can leach from this treated wood, leaving residues on the wood’s surface and in nearby soil. Young children who play on or near decks or playscapes made from CCA- treated wood can get arsenic on their skin and into their bodies, especially if they eat or drink without washing their hands. Because of the health risks of long-term exposure to arsenic, the Environmental Protection Agency (EPA) has announced that as of December 31, 2003, arsenic Currently the EPA does not recommend that people remove existing structures made with CCA-treated wood or the soil surrounding those structures. However, they do recommend that people reduce their potential exposure to arsenic.</span>
5 0
3 years ago
What boundaries create new oceanic crust?​
enyata [817]
ANSWER ( Convergent plate boundaries )

At convergent plate boundaries, oceanic crust is often forced down into the mantle where it begins to melt. Magma rises into and through the other plate, solidifying into granite, the rock that makes up the continents. Thus, at convergent boundaries, continental crust is created and oceanic crust is destroyed.
7 0
3 years ago
{100 POINTS!}
Zinaida [17]

Answer:

B. Bacteria that carry out decomposition

Explanation:

This is your answer because these don't produce anything. These are things that don't produce their own food, but they eat something else. One example on land can be Mushrooms.

So hence, your answer is only B. Bacteria that carry out decompositon

Thanks!

Mark me brainliest!

3 0
2 years ago
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