water regulation
What is the name of the government agency that sets the laws for the acceptable levels of contaminants (pollution) in out water sources?
The Environmental Protection Agency (EPA)
7. the further below 7 it is the more of an acid it is. ex. a water with a Ph of 3 is far more acidic than water with a Ph of 6. Pure water has a Ph of 7 and is neither an acid or a base. Bases have a Ph above 7. water with a Ph of 8 would be basic.
This is why the majority of the water cycle occurs over the ocean and not over land.
because the majority of earths water is in the ocean and the ocean covers the majority of the earths surface.
What is a marine ecosystem that requires life to be able to adapt to both life on land and under water?
The intertidal zone. The area of the beach in-between the high and low tides.
Why do we have water treatment plants?
To reduce water borne illnesses.
To increase the levels of dissolved oxygen (O2 gas) in water what must be lowered?
The temperature of the water. Colder water absorbs and holds onto more O2 gas (dissolved oxygen)
97 % of the Earth's water is in the ocean and is described as what?
Salt Water. Non drinkable water.
Why would fishermen look for areas of cold water surrounded by areas of warmer water?
Because this is where upwelling is occurring. Cold nutrient rich water rises from the bottom to the surface and causes an phytoplankton or algae bloom which leads to a fish feeding frenzy.
Where do non point pollution or point pollution cause the most damage in a stream of river?
In O2 is depleted due to a rise in temperature or Eutrophication what will most likely be the result?
Fish will die.
Higher temperatures near the equator lead to increased levels of evaporation. How does with effect the ocean water near the equator?
How has the total amount of water on Earth changed over the history of the Earth?
It has no changed it has remained constant. It only changes forms through the water cycle. Water availability can change but the total amount has stayed the same.
What is it that water treatment plants do?
Remove organic matter from, and kill germs in, the water.
What three measurements are used to determine the health of water? What would constitute healthy water?
High O2 levels , Low Nitrate Levels, Ph close to 7.
where does upwelling occur most often?
Near the coast and around sea mounts.
Where is the destination of river basins? Where do rivers end up running into?
The ocean.
How can modern day agricultural practices damage a water system.
Pesticides (bug poison) and Fertilizers (plant food) can be carried by run off into the water systems and accumulate.
Rainbow Trout are sensitive to temperature change. The can be used to monitor the health of water. What are they known as?
A Bioindicator Species.
Why is it best to use remote operated vehicles to explore very deep areas in the ocean?
Because deep sea regions are unsafe for humans to travel into.
Daily Double
What about estuaries allows for a great variety of life to thrive there?
Why are they so important to marine ecosystems? (ocean ecosystems)
There is a mix of both salt and fresh water. (brackish water)
Many marine species of especially fish reproduce in estuaries.