m1:2 Flashcards
What refers to organize effort to catch aquatic species?
Fisheries
what do you call the same species of fish?
Fish
Multiple species of Fish
Fishes
What theory suggest the “ the greatest good for the greatest number”
Utilitarianism
What are the two types of Aquatic Ecosystem?
Marine Ecosystem
Fresh water ecosystem
A partially enclosed, coastal water body where freshwaters from rivers and streams mixes with salt water from the ocean
Estuary
What is less dense than saltwater, it floats above the seawater?
Fresh water
How many percent of nutrients does fish absorb?
10%
The remaining 90% of nutrients is used for what?
To function as part of the system
Example of organism that is affected by global warming?
Turtle. The gender depends on temperature. If the temperature is hot the offsprings will be male.
What transforms an originally stable, mature and efficient ecosystem into one that is immature and stressed?
Overfishing
What deeply modify the trophic chain and flows of biomass?
Fisheries
Example of physical human activity?
Adding artificial structures like reefs, oil rigs
Example of mechanical human activity?
Ploughing effect of dredgers and trawls
Example of chemical human activities?
injection of nutrients
