"The Silurian is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at 443.8 million years ago, to the beginning of the Devonian Period, 419.2 Mya.<span> <span>Wikipedia."
https://www.google.com/search?q=He+Silurian+period+occurred&rlz=1C1RUCY_enUS760US760&oq=He+Silurian+...
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About 23 Percent Of Solar Energy Is Absorbed By The Earths Surface
False. Erosion washes and wears down the soil of the earth. Hope this helps!
Hey there! I'm happy to help!
Within the biosphere, all of the Earth's other spheres work together.
The root word "bio" means life, and in biology, that is what we are studying! The biosphere encompasses the life in all parts of the Earth. The water (hydrosphere), the air (atmosphere and troposphere), and the ground (lithosphere). These are all driven by life, which is what they all have in common.
Have a wonderful day and keep on learning! :D
<span>C. the rate of primary productivity
</span>Since primary productivity is measured in three ways (A<span>mount of CO2 used,</span>
<span>rate of sugar formation and </span><span>oxygen production) these don't control the climate, but can change it. Unlike the other options.</span>
