Coral reefs are made of ____. a. volcanic rock b. gravel-sized marine sediments c. seaweed d. ...

Author Question: Coral reefs are made of ____. a. volcanic rock b. gravel-sized marine sediments c. seaweed d. ... (Read 63 times)

WWatsford

Hero Member
Posts: 539

on: Jul 13, 2018

Coral reefs are made of ____.

a. volcanic rock
b. gravel-sized marine sediments
c. seaweed
d. limestone skeletons of tiny marine animals

Question 2

Cinder cones typically ____.

a. have several fissures
b. erupt as lava flows
c. are composed of tephra
d. form the largest type of volcano

momo1250

Sr. Member
Posts: 338

Reply #1 on: Jul 13, 2018

Answer to Question 1

d

Answer to Question 2

c

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