Marine Environments Endgame

Overfishing represents a global type of threat to coral communities

The Mediterranean Sea is allegedly very rich in oil and gas resources

Gas hydrates are usually found in (2 correct):

Iron oxyhydroxides normally sact as cations, attracting metal ions of Cadmium, Zinc and Cobalt

Select 2 sources of gases in the ocean

Select 2 reactants that take part in chemosynthesis and produce carbohydrates

Manganese oxydes scavange dissolved metals from the seawater

What mainly causes a decrease in oxygen levels below 200 m?

Which of the following is a biogenous type of marine sediment?

A low marsh is a region that's flooded daily

Pollutants tend to be repelled by/from the surfaces of microplatics

Manganese nodules are more likely to be found on the seafloor rather than on continental slopes

Manganese crusts are more likely to form plateaus rather than on the slopes of seamounts

Deep seep (biological) communities tend to be fueled through chemosynthesis

A mix of fresh and sea water is called...

In photosynthesis, the main source of energy are inorganic chemicals

Normally, when the biological pump is active, particles rise towards the surface

Estuaries are generally known for their high biodiversity

All marine surfaces (regardless of size and dimension)arehabitates of benthos

It is knwon that organic molecules are unstable at high temperatures

The maximum average discharge of the Amazon river is recorded in months oct-feb

For many elements, hydrothermal plumes are a net sink

What does 'the new rush to the North Pole' hint to?

Most oil and gas originates from life as microscopic plants and animals that live(d) in the ocean

Most of the species living in the oceans are pelagic

Corals tend to exist in proximity of river mouths because of the relatively constant nutrient inflow

Most plankton can be found in downwelling zones

Hydrothermal fluids tend to be rich in (choose multiple)...

The oldest common ancestor of terrestrial life was probably hyperthermophilic

Under oxic conditions, iron is found as Fe2+

Which of the following factors leads to the dissolution of calcite skeletons?

Climate change may accelerate natural physical processes in submarine canyons

Cold seeps always form because of hydrothermal activity

What is the name of the prcess that leads to most of the scavanging of certain trace elements, specific to estuaries?

The ocean zone where no light reaches is called 'disphotic'

Which of the folowing ocean zones is 'closest' to the surface?

Canyons foster more diverse benthic communities

Select the deepest ocean zone among the following

Usually gas hydrates are stable in areas of low temperature and low pressure

Sorm events enhance the transfer of trace metals into submarine canyons.