Atmosphere and Meteorology1

What gas needed to be established within the Earth's atmosphere before the atmosphere was able to absorb and maintain heat?

• Hydrogen
• Oxygen
• Nitrogen
• Carbon dioxide

A large volcanic eruption leads to cooling temperatures from _______.

• Release of carbon dioxide
• outflow of magma
• added ash into atmo-sphere
• increased t-storms

Where did the oxygen in the early atmosphere come from?

• bolide impacts
• early plant photo-synthesis
• seafloor spreading
• volcanic activity

What helped marine organisms evolve onto land?

• decrease in atmospheric CO₂
• decrease in atmospheric hydrogen
• increase in atmospheric oxygen
• increase in atmospheric nitrogen

O₃ is created in which layer of the atmosphere?

• Troposhere
• Stratosphere
• Mesosphere
• Thermosphere

Most ozone is found in what layer of the atmosphere?

• Troposphere
• Stratosphere
• Thermo-sphere
• Exosphere

Earth's Haden atmospheric composition resulted from ____.

• volcanic eruptions
• crustal rebound
• Evapo-transpiration
• physical weathering

Early stromatolites respired what gas causing significant change?

• Methane
• Freon
• Carbon dioxide
• Oxygen

Fossils indicate the earliest form of life was ______.

• bacteria
• protozoa
• diatoms
• sarlacc

Complex organisms evolved due to _______.

• cooling of the sun
• massive seismic activity
• changes in atmosphere
• meteorite strikes