Think about how the geologic time scale was created and how it was divided Then answer the following questions
*How did scientists form the geologic time scale
*How is this scale organized?
*What process changed thebEarth's enciroment diring Precambrian time?
(written response btw)

Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation

Pls need ! in your opinion, what are the limiting factors that might affect the growth or diversity of our ecosystem? respond to this question in claim, evidence, reasoning format. 1. make your claim (i are the limiting factors that might affect the growth or diversity of our 2. follow the claim with 3 pieces of evidence. evidence may be taken from the reading, the videos, previous lessons, or googled answers. site sources, too. 3. use reasoning to explain why you chose your evidence.

Several billion years ago which gas was the least prevailant in the atmosphere