The figure below shows the formation and sinking of dense water in the Arctic Ocean between Greenland and northwest Europe. Why
is there an increased density of surface waters in this region? A. Evaporation decreases salinity, and heavy polar air increases atmospheric pressure.
B. Evaporation decreases salinity, and cool atmospheric temperatures decrease water temperature.
C. Formation of sea ice increases salinity, and heavy polar air increases atmospheric pressure.
D. Formation of sea ice increases salinity, and cool atmospheric temperatures decrease water temperature.
Answer: The correct option is A. Evaporation decreases salinity, and heavy polar air increases atmospheric pressure.
The ocean circulation conveyor belt or the thermohaline circulation of sea water that circulates massive water currents from northern to southern oceans and again back. The warm water on releasing heat becomes denser and sinks down. This closed circulation loop makes the cold water move towards the tropical region at the deeper levels.
The decrease in salinity results due to evaporation. The density of sea water depends on pressure, temperature and salinity. Density increases when temperature decreases and salinity increases. The wind field pattern is formed from the warm ascending air from the low atmospheric pressure in tropical region and high atmospheric pressure from the cool descending air in subtropical region.
In the Arctic region dense sinking surface water is counteracted by the release of fresh water due to melting of ice and a high atmospheric pressure. The low temperature in the polar region makes the air heavy and is forced to descend which causes high pressure zone.
No metabolism occur and decrease oxygen consumption.
Explanation:
There is adverse effect of chemical on metabolism and oxygen consumption of the treated seedlings because NADH is very important because it maintains the hydrogen pumping that produces ATP molecules. If NADH is oxidized to NAD, then the metabolism did not occur in the seedlings and due to no metabolism, oxygen consumption is also greatly affected.
Eutrophication is where these nutrient rich compounds mix with nearby water sources and promote the growth of large amounts of algae. Algae go through respiration and take up the dissolved O2 in water which causes these areas to experience low O2 levels. Everything needs O2 to survive thus nearby organisms and plants die out creating dead zones.
Cancer refers to any one of a large number of diseases characterized by the development of abnormal cells that divide uncontrollably and have the ability to infiltrate and destroy normal body tissue. Cancer often has the ability to spread throughout your body. Cancer is the second-leading cause of death in the world.
