Could someone please help me with this two questions? Examine p. 374 . List half
ID: 801914 • Letter: C
Question
Could someone please help me with this two questions?
Examine p. 374. List half a dozen of the unique features of Earth that make life possible, and then, next to each item in the list, explain each one separately in about a half-sentence — be careful to explain very briefly how the item makes life possible. Mere listing of something is not sufficient; you must explain why that “something” enables or protects life on Earth.(in our own words
)Answer all 16 identification-matches using
PC = Precambrian
EP = Early Paleozoic
LP = Late Paleozoic
ME = Mesozoic
CE = Cenozoic
Pangaea formed
EP
First trace fossils
PC
The most brief era
CE
Earth’s cratons formed
PC
“Age of Dinosaurs”
ME
Rocky Mountains formed
Appalachian Mnts formed
Coal swamps appear No.Amer.
Gulf Coast oil deposits formed
Major iron-ore deposits formed
Massive sand dunes in Colorado
“Age of Fishes”
Pangaea began to break apart
“Age of Mammals”
First vertebrates appeared
Stromatolites were abundant
Pangaea formed
EP
First trace fossils
PC
The most brief era
CE
Earth’s cratons formed
PC
“Age of Dinosaurs”
ME
Rocky Mountains formed
Appalachian Mnts formed
Coal swamps appear No.Amer.
Gulf Coast oil deposits formed
Major iron-ore deposits formed
Explanation / Answer
1) a)
Earth is not too big; if it was too big, then the force of gravity would generate a hazardous atmosphere.
Not too small; otherwise air, water vapor, and such would not be on earth.
Earth has a rigid lithosphere; it is required for functioning plate tectonics.
It has a molten metallic core and it maintains the magnetic field and it protects earth.
Not too close to the sun so that it is not too hot and full of gas carbon dioxide.
Also it is not too far from the sun and keeping it warm adequate without being too cold.
b)
PC = Precambrian EP = Early Paleozoic LP = Late Paleozoic ME = Mesozoic CE = Cenozoic
Pangaea formed- PC
First trace fossils- EP
The most brief era Earth’s cratons formed- EP
Age of Dinosaurs-ME
Rocky Mountains formed- CE
Appalachian Mnts formed- LP
Coal swamps appear No.Amer.- ME
Gulf Coast oil deposits formed- CE
Major iron-ore deposits formed- PC
Massive sand dunes in Colorado- ME
Age of Fishes- LP
Pangaea began to break apart-ME
Age of Mammals- CE
First vertebrates appeared -EP
Stromatolites were abundant-PC
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