Life on Earth and the possibilities of extraterrestrial life,presentation help (10-12 slides)

timer Asked: Jun 1st, 2016
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Question Description

Please complete no plagiarism and everything must be cited correctly.

Tutor Answer

School: Duke University

All living organisms share several key characteristics and functions i.e
1. order
2. sensitivity
3. reproduction
4. growth and development
5. regulation
6. energy
7. homeostasis
8. evolution

a) Panspermia
b) Biopoesis

c) Spontaneous Generation
d) Clay Theory
e) Theory of Consecutive Creations
f) Organic Evolution
g) Theory of Special Creation

Regular determination is one of the fundamental components of development, alongside
change, relocation, and hereditary float.
Darwin's stupendous thought of development by normal choice is moderately straightforward
yet regularly misconstrued. To discover how it functions, envision a populace of bugs:


There is variety in qualities.

For instance, some scarabs are green and some are cocoa.


There is differential generation.

Since the earth can't bolster boundless populace development, not all people get the opportunity
to duplicate to their maximum capacity. In this case, green bugs have a tendency to get eaten by
winged creatures and get by to repeat less regularly than cocoa creepy crawlies do.


There is heredity.

The surviving chestnut insects have cocoa child creepy crawlies on the grounds that this quality
has a hereditary premise.

End result:

The more worthwhile attribute, chestnut tinge, which permits the insect to have additionally
posterity, turns out to be more regular in the populace. In the event that this procedure proceeds,
in the long run, all people in the populace will be cocoa.

Over the years, life has been changing to fit into the new
ecosystems resulting to evolution.
3 billion years back
Infections are available at this point, however they might be as old as life itself.
2.4 billion years back
The "colossal oxidation occasion". Probably, the harmful waste created by
photosynthetic cyanobacteria – oxygen – begins to develop in the environment.
Disintegrated oxygen makes the iron in the seas "rust" and sink to the ocean bottom,
shaping striking joined iron developments.
2.3 billion years back
Earth solidifies over in what may have been the primary "snowball Earth", potentially
as an aftereffect of an absence of volcanic movement. At the point when the ice in the
long run dissolves, it in a roundabout way prompts more oxygen being discharged
into the air.
2.15 billion years prior
Initially undisputed fossil confirmation of cyanobacteria, and of photosynthesis: the
capacity to take in daylight and carbon dioxide, and get vitality, discharging oxygen as
a by-item.

2 billion years prior?
Eukaryotic cells – cells with inward "organs" (known as organelles) – appear. One key
organelle is the core: the control focus of the cell, in which the qualities are put away as DNA.
1.5 billion years back?
The eukaryotes partition into three gatherings: the precursors of present day plants, growths
and creatures split into discrete heredities, and develop independently.
900 million years back?
The primary multicellular life creates around this time.
800 million years prior
The early multicellular creatures experience their first parts. To start with they isolate into,
basically, the wipes and everything else – the last being all the more formally known as the
770 million years prior
The planet solidifies over again in another "snowball Earth".
730 million years prior
The brush jams (ctenophores) split from the other multicellular creatures. Like the cnidarians
that will soon tail, they depend on water moving through their body depressions to secure
oxygen and sustenance.
680 million years prior
The precursor of cnidarians (jellyfish and their relatives) splits far from alternate creatures –
however there is up 'til now no fossil confirmation of what it would appear that.
630 million years back
Around this time, a few creatures adva...

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Tutor went the extra mile to help me with this essay. Citations were a bit shaky but I appreciated how well he handled APA styles and how ok he was to change them even though I didnt specify. Got a B+ which is believable and acceptable.

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