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kari74 [83]
3 years ago
10

Group name given to the first life forms which developed on earth about 3.8 billion years ago

Biology
1 answer:
aleksandrvk [35]3 years ago
4 0
The first living things on Earth, single-celled micro-organisms<span> or microbes lacking a cell nucleus or cell membrane known as prokaryotes, seem to have </span>first<span> appeared on </span>Earth<span> almost four billion years ago, just a few hundred million years after the formation of the </span>Earth<span> itself.</span>
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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.

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4 years ago
16. The genetic variation that leads to evolution can occur when genes from
Art [367]
C. natural selection
6 0
3 years ago
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Which organisms are secondary consumers in a temperate coniferous forest?
Leya [2.2K]

Complete question:

Which organisms are secondary consumers in a temperate coniferous forest? Select all that apply:

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  • wolf
  • elk

Answer:

The lynx and the wolf are the only secondary consumers on the list.

Explanation:

In the trophic web, the energy transference occurs when each organism feeds on the preceding link and is eaten by the following link.

The first ones are the autotroph organism or producer, such as a vegetable, that can synthesize organic matter from inorganic matter.

The following links are the consumers: herbivores are primary consumers and feed on producers. <u>Carnivores are secondary consumers and feed on herbivores</u>, and so on. The last links are the decomposers, microorganisms that act on dead animals degrading organic matter.

According to the definition of secondary consumers, among the animals on the list, we can assume that the lynx and the wolf are the only secondary consumers. They are both carnivores and feed on herbivores.

On the other hand, the moose and the elk, are both first consumers.

4 0
3 years ago
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The following substrate is completely oxidized to CO2 by a cellular homogenate containing all necessary enzymes and coenzymes .
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Answer:

The correct answer is - 19 ATP.

Explanation:

One molecule of dihydroxyacetone phosphate fully oxidizes and generate 19 molecules of ATP by the following stochiometry

Direct ATP- 2

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ATP from GTP 1

ATP from FADH2 1 or 1.5

Total 19 or 19.5

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_____ is the diffusion of water.
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The answer would be Osmosis.

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