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maria [59]
3 years ago
7

What holds one strand of DNA together?

Biology
1 answer:
notsponge [240]3 years ago
7 0

Answer:

Nucleotides and bases.

Hope this helps!

Brainliest? :)

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Draw a cartoon strip or write an article to summarise the greenhouse effect and how it can lead to global warming. Include the f
aleksandr82 [10.1K]

The greenhouse effect is an essential phenomenon for life on earth. However, human activities such as pollution and burning of fossil fuels have caused an intensification of this effect, which has harmed the atmosphere and is directly related to global warming.

The greenhouse effect is formed by a layer of atmospheric gases that settle around the planet and allows a temperature suitable for life to reach the earth's surface. Therefore, we can guarantee that this effect is essential for our survival. It is necessary that the amount of these gases is kept in equilibrium for this temperature to be constant.

However, the burning of fossil fuels, industrial activities, pollution (caused by vehicles, aerosols, fires, among others), the use of non-renewable energy releases greenhouse gases into the atmosphere daily and in large quantities.

This causes the layer of greenhouse gases that circulates the earth to become more and more expanded, not being able to disperse solar radiation easily and causing an increasing temperature. All that heat is retained in the atmosphere, thus generating global warming, which allows the planet's temperature and ocean water to increase dramatically, which can cause various harmful effects to life on the planet.

For this reason, it is necessary to carry out public policies that reduce pollution and encourage the use of clean and renewable energy that does not increase the layer of greenhouse cases, promoting well-being and life on earth.

5 0
4 years ago
Why are all cells very small?
kolezko [41]

Answer:

Cells are small because they need to keep a surface area to volume ratio that allows for adequate intake of nutrients while being able to excrete the cells waste. That is why the cell needs to be small. The smaller it is, the larger the surface area to volume ratio is. ... This is why cells are so small.

explicación:

The important point is that the surface area to the volume ratio gets smaller as the cell gets larger. Thus, if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume. ... That is why cells are so small.

7 0
3 years ago
Calculate the percentage of the class and North Americans who are heterozygous tasters. Round to the nearest hundredth. Heterozy
Zigmanuir [339]

Answer:

Heterozygous in class data:

⇒ .44

Heterozygous in North America:

⇒ .48

Explanation:

edge 2021

5 0
3 years ago
How are human beings and chimpanzees phylogenetically related?
Tema [17]

Answer:

I would say that its they are descendant of a common ancestor. DNA shows that our species and chimpanzees diverged from a common ancestor species that lived between 8 and 6 million years ago.

Explanation:

6 0
3 years ago
Read 2 more answers
The human ear receives sound waves ____ and converts them to signals that are processed by the brain
r-ruslan [8.4K]

Answer:

Explanation:

The human ear is the organ for hearing. It converts sound waves into electrical impulses through which the brain processes to facilitate our hearing.

The ossicles inside the ear amplify sound waves they collect from the environment and transmits them into the inner ear.

Once in the inner ear, they are converted into electrical signals the brain can easily understand and discern.

3 0
4 years ago
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