answersLogoWhite

0

They use climate proxies to infer characteristics of climate in the past. For examples, atmospheric gases become trapped in antarctic ice. Scientists can now drill into the ice and take a core sample, testing the ice to determine what the atmosphere was made of, and therefore how it behaved, in the distant past.

A:

One component, the temperature, of the archaic atmosphere may be determined by the ratio of two isotopes of oxygen. O16 and O18. Their contribution to the atmosphere is a function of temperature.

And in the very early Earth, there was little oxygen therefore there was little photosynthesis going on.

And in the late Carboniferous Era, the oxygen content rose to over 30%, indicating massive photosynthesis and a warm climate. In this era, some dragonflies grew to have a 75cm wingspan! Only possible with plenty of food and a warm climate.

User Avatar

Gerardo Glover

Lvl 13
3y ago

What else can I help you with?

Related Questions

How do you know that prehistoric sharks were bigger than todays sharks?

Scientist Know This Because They Have Discovered Fossils Or Bones Of Prehistoric Sharks From Millions Of Years Ago Which Shows That There Bone Growth Was Much Larger Than Sharks Today.


When was salt founded?

Salt is known from the prehistoric times; also animals know salt.


Who needs to know the times and heights tides?

scientist


How do scientists know what climate was like in prehistoric times?

probably because if the plants fossils are in good condition they could tell that it was wet and warm or if there were all these dead animals and plants they could tell it got warm and dry


What are the indicators used by scientist to know the climate change or temperature in the past?

sea level is rising


Who invented boots?

Boots were invented in prehistoric times. We do not even know what part of the world they were invented in.


What are facts about a shark that not many know?

they have never changed over the years their the same as prehistoric times.


How many tornadoes have their been in the world?

no one will ever know because there was alot in prehistoric times


What is a perfect description of a paleontoligist?

A paleontologist is a scientist who studies organisms of the past. They often know about physiology, anatomy, geology, math, chemistry, and physics, and they use this varied knowledge to piece together information about how prehistoric organisms lived and how prehistoric ecosystems functioned.


What year were the first slaves captured and how?

Slavery has existed since prehistoric times. We don't know exactly when or where it started.


How is climate modeling important to the global warming debate?

The government needs to know what the climate is at all times


Who discovered the first element in the periodic table?

In the prehistoric times;impossible to know: gold or silver, mercury or copper, sulfur or carbon.