Fill in the blank.
period
1. sea levels rise and lower when
form and break up over time.
2. the first mammals did not appear on land until near the end of the
3. the first four-legged animals to reach land were classified as
4. pangea was fully formed during the late period.
respond to the following based on your reading.
5. briefly explain the causes of glaciation and the processes that cause glaciers to grow.
6. briefly explain how changes in sea level and evidence of past marine life are related.
your response here,

supercontinents

Triassic

amphibians

Carboniferous

For glaciation to begin, something needs to cause Earth's temperatures to drop. If this happens, snow that falls on the polar ice caps does not melt, and glaciers grow. As snow and ice reflect sunlight, the Earth's temperature is reduced even further, causing glaciers to continue growing.

Sea level changes cause marine transgressions and regressions. During a marine transgression, the shoreline moves inland, leaving sedimentary deposits that contain fossils. The shoreline retreats during a marine regression, leaving behind the deposited sediments.

Explanation:

supercontinents

Triassic

amphibians

Carboniferous

For glaciation to begin, something needs to cause Earth's temperatures to drop. If this happens, snow that falls on the polar ice caps does not melt, and glaciers grow. As snow and ice reflect sunlight, the Earth's temperature is reduced even further, causing glaciers to continue growing.

Sea level changes cause marine transgressions and regressions. During a marine transgression, the shoreline moves inland, leaving sedimentary deposits that contain fossils. The shoreline retreats during a marine regression, leaving behind the deposited sediments.

pennfoster.

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