Chapter 12.3 Review Questions Oceanography

Most marine species are found in the ________.

• benthic environment

• pelagic zone

• intertidal zone

• estuarine region

As many as ________ new marine and terrestrial species are discovered each year.

• 2,000

• 200

• 20,000

• 200,000

Tags

NGSS.HS-LS4-5

Sharks have existed almost unchanged in Earth's oceans for more than ________ years.

• 400

• 40

• 4,000

• 40,000

Tags

NGSS.MS-LS4-1

Marine species represent only ________ of the total number of known species on Earth.

• 13%

• 50%

• 25%

• 70%

Overall, as many as two ________ new marine and terrestrial species are discovered each year.

• thousand

• hundred

• million

• dozen

The total number of cataloged species on Earth in both marine and terrestrial environments is currently:

• 1.8 thousand

• 1.8 million

• 1.8 billion

• 1.8 trillion

Tags

NGSS.MS-LS2-5

The most likely total number of species on Earth is estimated to be between ________.

• 6 and 12 million

• 12 and 40 million

• 100 and 200 million

• 600 and 900 million

Tags

NGSS.HS-LS4-5

The most recent international project to assess the diversity, distribution, and abundance of marine life was called which of the following?

• Census of Marine Life

• History of Marine Animal Populations

• International Census of Marine Microbes

• Systematic Census of the Ocean

• The Ocean Biogeographic Information System

So few of the world's species live in the ocean because the marine environment ________.

• doesn't have any sunlight

• is a poor habitat for life

• is a prime habitat for life

• is less stable than the terrestrial environment

• is more stable than the terrestrial environment

Most marine species inhabit the benthic environment because it ________.

• is more stable than the planktonic environment

• is less stable than the planktonic environment

• is a prime habitat for life

• doesn't have any sunlight