Are We Alone Research Paper

Critics may argue that evolution, being blind and unguided, cannot produce its results - life as we know it - in such a timespan. However, with self-replicating chemicals (like DNA or RNA), a reliable source of energy (the sun), and a vast surface area and lots of water, organic chemicals and other substances, and a vast amount of time (a year alone has over half a million minutes), it is not difficult to imagine how life could have proliferated, diversified and evolved over aeons, after first appearing as a self-sustaining system supporting and supported by a series of chemical processes happening in tandem and interacting with the

In Naturalistic Evolutionary view point, Earth was formed out of nothing 4.6 billion years ago, and went through several different periods of intense transition to arrive at what we now see. The first period of transition is known as the Precambrian in which “the most important events

3. Thermal springs, such as Old Faithful in Yellowstone National Park, have temperatures above 100°C. How does adaptation make it possible for living organisms to inhabit such an extreme environment?

The evolution of that formation created the world we live in today. The earth has been in existence for a little over four point five billion years to be exact. The earth shares a story that we are still exploring. From its colorful coral reefs in bright and vibrant

The old-Earth evolution and young-Earth creation debate has been one that has gone on for centuries. Each viewpoint seeks to give an answer to life’s most difficult questions or origins and how the Earth came to be what it resembles today. While the Young Earth viewpoint has remained constant and unchanged throughout the centuries the Old Earth view seems to be continually evolving as new discoveries tend to discredit previous assumptions. One certainty is that both viewpoints take a dogmatic stance against each other in regards to the interpretation of scientific evidence. The purpose of this paper is to compare old-Earth and

living organisms to be able to adjust to acidic rain that quickly in a short time span. According

Fox-Skelly, Jasmin. “Earth - Some Lifeforms May Have Been Alive since the Dinosaur Era.” BBC News, BBC, 3 June 2016, www.bbc.com/earth/story/20160602-some-lifeforms-may-have-been-alive-since-the-dinosaur-era.

Australia has small crystals that enables scientist map out earths existence; they are called Zircons. The earth began as dust. The planet was extremely hot at first and without a certain collusion it would not be what it is today. A planet with four seasons and with tides in the ocean from the moon. At first, there were no continents they would come along later, so it was mostly water. Next, single cell organisms and photosynthesis would start creating oxygen. In fact, oxygen was so abundant it froze most the planet. Eventually, oxygen would lead the planet to multicellularity. Life would come and go many times over the course of time. This would be causes by catastrophic events, but life would always be resilient. All life evolved from the sea.

Assumptions: “Life existed on earth for hundreds of millions of years before species evolved that

The earth is known to be 4.534 billion years old. Life however has only been on earth for 3.8 billion years. One major time period from Earths earliest years is the Paleozoic Era. This particular era which lasted from 542 million to 251 million years ago (Lee, Torney & Owen, 2012). It was this time frame that the Earth went through great change, as it was within this era that the breakup of one supercontinent ended, and the formation of another started. It was also in this that plant populations started to grow, whilst the very first vertebrate animals colonized land (Lee, Torney & Owen, 2012). It was in this period that trilobites were in abundance and ruled the oceans (Crônier & François, 2014).

Earlier ideas to how organisms changed over time were based on fossil records, chemical and anatomical similarities of elated life forms, geographic distribution of related species and genetic changes in living organisms over many generations. Based on the fossil theory, fossils are remains of animals or plants found in sedimentary rocks that give us a record of past changes through long periods of time. The fossil record provides evidence that the complex animals and plants of today were preceded by earlier simple ones, it shows that multi-cells

In this speech, I will describe prehistoric life briefly so I have chosen eons as my time units. Eons usually span a billion years but it can always vary. There are four Eons since the start of life on Earth. Hadean Eon (4000 million years

The Earth is thought to be a self regulating system, and considered a living organism that optimizes conditions of life for itself. This system as a whole has homeostatic mechanisms that are responsible for maintaining a physical and chemical environment that is fit for life on the planet. Processes such as the interaction of living forms such as microorganisms with inorganic elements are essential for sustaining conditions of life. These processes establish a global control system that is in charge of many different variables such as: controlling the global temperature, atmospheric content, and the ocean salinity.

Precambrian time is most of the Earth's history, starting with the planet's creation about 4.6 billion years ago. There are many theories on how life began. Some people say there was a “Big Bang” that happened 4.6 billion years ago. Scientist say that some chemicals collided with some solar energy and then there was a big explosion that created the world we live in today. No one can prove that the