The Russian revolution of 1917 led to what?

Write 273×346 in area

SOVA2 [1]

It will be 95,496 area squared

3 0

3 years ago

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Where did the original atmospheric oxygen come from

faust18 [17]

The correct answer is - cyanobacteria.

The atmospheric oxygen came from the cyanobacteria. These were one of the earliest living organisms on Earth. The cyanobacteria was using photosynthesis in order to create its own food. The photosynthesis process requires sunlight, carbon dioxide, water, and oxygen. The oxygen is mostly released as a waste product from the process of photosynthesis, thus the cyanobacteria were literally releasing oxygen that was ending up into the atmosphere. As more and more cyanobacteria there were across the planet, more and more oxygen they were releasing into the atmosphere, slowly changing the composition of the atmosphere, and setting the basis of it as we know it now.

3 0

3 years ago

what IS the threat of GMOs. One major food chain has stopped selling GMO-related foods and there have been some criticisms of th

olga55 [171]

Answer:

GMOs refers to organisms that have had changes in their DNA using genetic engineering and the threat is to make ssure they are safe for people because if this genetic modifications.

Explanation:

GMO food is food produce from organisms that have been genetically modified and people is concerned about the dangers of eating this food. However, scientific data have said that it doesn't generate a risk to human health but every GMO food needs to be examine.

4 0

3 years ago

Global climate change is most likely the result of _____. Environmental Issues: Select the best answer from the choices provided

klasskru [66]

$\Large{\underline{\boxed{\mathfrak \pink{Question:-}}}}$

Global climate change is most likely the result of _______. Environmental issues: Select the best answer from the choices provided.

A. Increased carbon dioxide in the air.

B. Diminishing natural resources.

C. Decreased Oxygen and carbon dioxide in the atmosphere.

D. Biodiversity.

$\Large{\underline{\boxed{\mathfrak \pink{Answer:-}}}}$

$\normalsize\star\textsf{Correct \: Option:-}$

$\qquad\bullet$ Option"A" is correct: Increase in Carbon dioxide in Air.

$\normalsize\star\textsf{Related \: Questions:-}$

a.) How global climate change is related to the increase of carbon dioxide in Air ?

$\qquad\bullet$ The Increase of Carbon dioxide in Air results in increase of Global warming(Green house effect).

$\qquad\bullet$ Green house effect : A building mostly made of glass for growing or shelter in the delicate plant is called greenhouse. the glass walls of greenhouse allows sun rays to pass through the interior.However, reflected back infrared rays are not allowed to escape through the glass walls. Carbon dioxide gas and water vapours present inside the glass house further trap the heat and make the greenhouse warmer than the outside air.

$\qquad\bullet$ The atmosphere cover around the earth ,acts similar to the glass walls of greenhouse. the air cover solar radiation to pass through it to the Earth’s surface, and prevent the long wave infrared radiation to escape into the space.Gases such as Carbondioxide,Nitrogen oxide,CFCs,ozone are the Greenhouse gases and among all of them "Carbon dioxide" is the most important gas.These greenhouse gases trap the heat reflected by the earth.

$\qquad\bullet$ The heating up of the atmosphere leads to an increase in Earth's temperature.This phenomenon is called " Global warming or Green house effect.

b.) What are the effects of Global warming?

$\qquad\bullet$ Increase in earth temperature will cause a change in weather and precipitation patterns on the earth.

$\qquad\bullet$ As we know the fact that " An increase of less as 1°C in Earth's temperature can lead to melting of polar ice caps and consequent rise in sea level".The sudden rise of sea level can submerge a number of major cities of the world which are located along the coasts.

$\qquad\bullet$ Global warming poses a threat of recurrence of "Dust Bowl condition of 1930's".Dust Bowl is an area where vegetation has been lost and soil reduced to dust making it suspectable to erosion.

$\qquad\bullet$ One of major danger of global warming is " Methane burp"which is caused by the melting of Methane hydrates in permafrost of polar ice caps & on the sea floor.

7 0

3 years ago

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Hurricanes start out over the ocean because they get their energy from?

Katarina [22]

Moisture evaporates from the water. The resulting warm moist air carries enormous amounts of energy. When this air is pulled into a developing hurricane it rises and as a result of this you get the Hurricane.

6 0

4 years ago

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