[Answered] What is a technique used to estimate past temperatures on Earth recorded in very old ice layers? ...

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CharlieWard

Hero Member
Posts: 578

on: Jul 13, 2018

What is a technique used to estimate past temperatures on Earth recorded in very old ice layers?

a. Ice coring
b. Oxygen-isotope analysis
c. CaCO3 analysis
d. Radioactive decay

Question 2

Approximately how much of the freshwater on Earth exists in the frozen form, largely as ice and snow in the polar regions?

a. 1
b. 10
c. 25
d. 70

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Pswine

Sr. Member
Posts: 328

Reply #1 on: Jul 13, 2018

Answer to Question 1

b

Answer to Question 2

d

CharlieWard

Member
Posts: 578

Reply 2 on: Jul 13, 2018

Excellent

steff9894

Member
Posts: 337

Reply 3 on: Yesterday

Wow, this really help

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