WORLD POPULATION GROWTH 20.000
Millions of people
10,000
World
5,000
2.000 Asia
1.000
Africa
Europe
500
200
United States,
Mexico Canada, & Greenland
100
Central America,
50 Caribbean Islands, &
South America
20
Oceania (Australia &
nearby Islands in the Pacific)
10
DCOZ
1950
1980
1980
1970
2010
2020
1990
2000
Year
2040
2050
Based on the information in the graph, which region's population is currently
growing the least?
A. Asia
OB. Europe
C. Africa
D. Australia
Hi

Hunting in the darksome fish rely on senses beyond sight. in the darkness of the marianas trench, a fish called the rattail has an extremely sensitive sense of smell. the fish uses scent, rather than sight, to steer toward food. once it's near food, the rattail uses a special organ on the bottom of its chin to guide itself by feel.marine snowone staple of the deep sea diet is "marine snow," flakes of organic, edible substances that sink down from the upper ocean. animals at the ocean's bottom find sustenance in everything from the bodies of dead creatures to fecal matter. marine snow is diverse enough to support numerous species. for instance, several species of snails and worms feed exclusively on deceased whales.microorganismsthe deep sea is an intricate ecosystem, and even the ocean floor itself plays a part. hydrothermal vents are cracks in the sea floor where erupting magma mixes with ocean water to produce plumes of hot, sulfur-rich chemicals. some microbes can use these chemicals for energy, sustaining their existence and that of the animals who depend on their roles in the deep sea food chain.