[Answered] Coral reefs are made of: a. volcanic rock. b. metamorphic rock. c. gravel-sized marine sediments. ...

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Author Question: Coral reefs are made of: a. volcanic rock. b. metamorphic rock. c. gravel-sized marine sediments. ... (Read 161 times)

B

Hero Member
Posts: 570

on: Aug 7, 2018

Coral reefs are made of:
a. volcanic rock.
b. metamorphic rock.
c. gravel-sized marine sediments.
d. seaweed.
e. limestone skeletons of tiny marine animals.

Question 2

The world ocean covers what percentage of Earth's surface?
a. 1
b. 21
c. 51
d. 71
e. 91

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Mollythedog

Sr. Member
Posts: 340

Reply #1 on: Aug 7, 2018

Answer to Question 1

E

Answer to Question 2

D

B

Hero Member
Posts: 570

Reply #2 on: Aug 7, 2018

Thank you!

Mollythedog

Sr. Member
Posts: 340

Reply #3 on: Aug 7, 2018

Always glad to help...

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