Kelp forests play key roles in marine ecosystems, in part by supporting important biodiversity. These kelp forests are threatened by ____.
A. rising tides
B. sea otters
C. sea urchins
D. cooling waters
E. sport fishing
Answer: C
You might also like to view...
What kind of information can be determined about the ocean with the use of satellites?
a. The height of the sea surface b. The temperature of the sea surface c. The amount of plankton productivity d. All of these choices
Oil and gas extraction are mostly limited to ________ Nigeria
A) southern B) northern C) eastern D) western
Which of the following is not a possible source of large stones along a shoreline?
A) Waves swirling away loose pieces of bedrock B) Undercutting by waves causes steep rock faces to collapse into the sea C) Rivers depositing large cobbles near the coastline D) Large storms eroding the deep seafloor and transporting the rocks toward the beach
Metamorphic rocks:
a. form when molted rock comes in contact with the atmosphere. b. often form depositional layers called bedding planes. c. are usually softer and less resistant to weathering than other rocks. d. can be metamorphosed. e. include the rocks obsidian and conglomerate.