8. which is NOt true for deltas? a. formed from deposits at the mouths of river,

Question

8. which is NOt true for deltas? a. formed from deposits at the mouths of river, b. can choke the original river channel, c. can cause rivers to break into several branches, d. river branches are called distributaries, e. all of the above
20. which is true for carbon dixoide a. it increases the acidity of water, b it evaporates from the surface of lakes and seas. c . it remains dissoved in water due to coldness and preassure of deep water. d. it is added to water by metabolism of bacteria in sea bottom mude. e. it forms carbonic acid . f. all
21 one charateristic of a lagoon is a. deep sea fossils , b glacial till c. deep water, d. cobbles. e. concentrated salt water
22. as waters becomes less acidic, calcium carbonate is precipated out and often forms. a. foraminfera.. b. oolites.. c. eskes, d. aretes, e. drumlins
23 the max. depth of the continental shelf is approx. a. 420 yards, b 650 feet c. 200 kiiometes, d 10,000 feet or e. the max depth in unknown

Explanation / Answer

8. which is NOt true for deltas?

a. formed from deposits at the mouths of river,

b. can choke the original river channel,

c. can cause rivers to break into several branches,

d. river branches are called distributaries

, e. all of the above

20. which is true for carbon dixoide

a. it increases the acidity of water,

b it evaporates from the surface of lakes and seas.

c . it remains dissoved in water due to coldness and preassure of deep water.

d. it is added to water by metabolism of bacteria in sea bottom mude.

e. it forms carbonic acid .

f. all

21 one charateristic of a lagoon is

a. deep sea fossils ,

b glacial till

c. deep water,

d. cobbles.

e. concentrated salt water

22. as waters becomes less acidic, calcium carbonate is precipated out and often forms.

a. foraminfera..

b. oolites..

c. eskes,

d. aretes,

e. drumlins

23 the max. depth of the continental shelf is approx.

a. 420 yards,

b 650 feet

c. 200 kiiometes,

d 10,000 feet or

e. the max depth in unknown

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