LIFE

WHEN AND HOW LIFE BEGAN

It is estimated that the earth formed about 4.5 billion years ago (Precambrian Period). Solid matter began to condense out of a vast expanse of dust and gas. 700 million years after the earth was created, living things made their debut. Please click on the following link for a tour. Life's Beginnings

All living things consist of the same chemical components (Carbon, oxygen, hydrogen, nitrogen, sulfur and phosphorus) and still use same chemical information and communication systems.

Life consists of matter (material that take up space) and energy (the ability to do work). Living things can be viewed as sequestered subsets of chemicals that (1) include instructions to reproduce and (2) require energy to maintain their organization.

A scenario for life's beginnings:

Energy from the sun and lightning + CO2+ CH4 (methane) + NH3 (ammonia) + H2O (water) and H2 (hydrogen gas) form amino acids which eventually create RNA nucleotide building blocks (cytosine, uracil, adenine & guanine) which polymerize and form RNA when phosphate ties the bases together (might have been liberated from rocks when erupting volcanoes released energy). RNA then evolves ability to (1) Splice itself into shorter sequences (2) Replicate itself and other RNAs (3) Code for assembly of amino acid sequences (4) Form the structural support (ribosome) for protein synthesis (5) RNAs + peptides form reverse transcriptase that change RNA to DNA (6) DNA then replicates and maintains its genetic information.

Today as far as we know, there are 1.2 million genes of all living things.

Here are a few websites you can obtain additional information from.

Geologic Ages of Earth History
Map of Ancient Earth
A Brief History Of Life
Origin Of Life
Tree of life
The Cell
The Five Worst Extinctions in the Earth's History
The Great Ice Ages or PBS Ice Age
The Era, period, epoch, age - Berkley.edu or PBS.org
Precambrian period (4.6 billion to 543 million years ago)
Cambrian Period (543 to 490 Million years ago)
Paleozoic Era (543 to 248 million years ago)
Age of the Dinosaur (Mesozoic era) Museum of Paleontology
Cenozoic Era (65 million years to present)
Pleistocene period (1.8 million to 11,000 years ago)
Holocene period (11,000 years to present)

HUMAN

HUMAN BODY COMPOSITION COMPARING WITH EARTH CRUST, SEA WATER AND BACTERIA

For 70 kilogram person in weight and percent of body weight

Human body is made up mainly with WATER (H2O) about 72 %

99% of the mass of a human body just made up of only six elements :OXYGEN, CARBON, HYDROGEN, NITROGEN, CALCIUM, and PHOSPHERUS

Here are the lists

ATMOSPHERE COMPOSITION

PRESENT DAY

NITROGEN 78 %

OXYGEN 21 %

ARGON 0.9 %

CARBONDIOXIDE 0.03 %(250 TO 330 PARTS PER MILLION)

OTHER TRACE GASES

ATMOSPHERE 3 BILLION YEARS AGO (PRIMEVAL SOUP)

PORPOSED BY SCIANTISTS (MILLER HYPOTHESIS)

WATER(H20)

METHANE(CH4)

AMMONIA(NH3)

HYDROGEN(H2)

No OXEGEN

ATMOSPHERE 5 BILLION YEARS AGO (WHEN THE EARTH JUST FORMED)

HELIUM

HYROGEN

AMMONIA

METHANE

THE SUN COMPOSITION

HELIUM 7.8 %

HYDROGRN 92. 1 %

“ALL LIFE IS ONE”

In 1924 to 1926 Kluyver and Donker recognized that bacterial cells, regardless of species, were in many respects similar chemically to all other living cells. We all

Use the same three- letter words of the genetic code. Sooner you will learn that the bacteria actually are superior than us, the human in many ways to better survive. Actually they have had survive for over 3 billion years without changes.

The purposes of life of any living things, it does not matter, it is the tree, the bacteria, the virus or the human, is just to survive as long as possible and to re produce as much as it can.