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What essentials for life are found in earths atmosphere?
The Earths atmosphere protects the earth from meteors and it tgives us oxygen
A trace of prehistoric life preserved in the earths crust?
fossils
How the earths rotation and revolution affect life on earth?
it popps
What are the advantages and disadvantages of earths surface?
life is a good thing.
Why is the Earths atmosphere needed for life?
because it keeps the air inside the earth
Why are fossils important to earths history as a planet?
Fossils aren't but the life that made them is.
Have the number and type of life forms remained fairly constant throughout earths history?
Ya
According to its name the archaeozoic era of earths history was characterized by what type of life form?
unicellular organisms are earliest forms of life
What event in earths history was dependent on the development of a certain type of life form?
addition of free oxygen
Why Describe how fossils can provide evidence of how environmental conditions and life have changed during earths history?
hi
What are the prehistoric eras?
There are so far 4 Eras in the earths history. the one that started the beginning if the earths history: Precambrian Time. The one after that was the Paleozoic Era, which means "ancient life." next was mesozoic which means "middle life" the one we are in is called the Cenozoic Era which means" recent life." * All Eras ended with a mass extinction.
Was oxygen present in early earths atmosphere what elements were present?
oxogen: unkown because of unknown life. elements: everything but pure potassium because that was not made till 1900's because it acts with air
Explain what effects karma has on the present life and the future life according to Hinduism?
This is my essay question in my World History class..? word for word
How do characters in A Christmas Carol solve the problem?
Each present a part in Scrooges history, past present and future that allows him to re-evaluate his life and hehaviours
What percentage of the air around us is oxygen?
The percentage of oxygen in the atmosphere is 20.75%. The atmosphere has many other elements that we breathe in besides oxygen. Oxygen needs to be present for life on earth.
Drawing lessons from history to see how past events affect life today is an example of what?
Connecting the past and present
Who studies Earths history?
Many people give their whole life trying to recover the earth's secret past. Mostly scientists would look at this topic.
