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According to Wikipedia...
"Red tides are caused by increase in nutrients that algae need, usually due to farm runoff, causing an overpopulation. Their occurrence in some locations appear to be entirely natural, while in others they appear to be a result of human activities. The frequency and severity of algal blooms in some parts of the world have been linked to increased nutrient loading from human activities. In other areas, algal blooms are a seasonal occurrence resulting from coastal upwelling, a natural result of the movement of certain ocean currents."
As for the effect on people:
"No deaths of humans have been attributed to Florida red tide, but people may experience respiratory irritation (coughing, sneezing, and tearing) when the red tide organism (Karenia brevis) is present along a coast and winds blow its toxic aerosol onshore. Swimming is usually safe, but skin irritation and burning is possible in areas of high concentration of red tide."
I hope that answers your question.
What else can I help you with?
Why crabs are found in low tide only?
Crabs are often found in low tide because they can scavenge for food more easily when the water level is lower. Additionally, low tide may provide more suitable conditions for mating or molting. Crabs have adapted to take advantage of these opportunities when the tide is out.
What is the cause of high and low tide water marks?
The moon apparently has a force that pulls the water up at high tide.
What kind of water are in tide pools?
Usually saltwater.
What causes high tide in malabon?
Hi Tide is the cause of being full of canals .... Hi tide is usually anounced by the most highest people in the city ....
Why does a neap tide cause less differences in water level?
nooo
How does the moon cause a tide?
the moons gravity pulls at the water making the a) north and south sides to have a high tide and the east and west have a low tide or b ) east and west has high tide and north and south has low
Is high tide and low tide cause due to gravitation?
Yes, tides are caused by the gravitational attraction that the moon exerts on the Earth and its bodies of water.
What tide does rockweed live in?
Rockweed, a type of seaweed, is commonly found growing in the intertidal zone, which is the area that is covered by water during high tide and exposed during low tide. This allows rockweed to thrive in both submerged and exposed conditions as the tide fluctuates.
When does a slack tide occur?
A slack tide occurs when the tide is neither incoming nor outgoing, resulting in minimal water movement. This usually happens for a short period between the change from incoming to outgoing tide, or vice versa.
The area of land that is covered at high tide but not at low?
This area is known as the intertidal zone. It is located between the high and low tide marks and is covered by water at high tide but exposed at low tide. Organisms living in this zone must adapt to frequent changes in water levels and conditions.
What environmental factors red tide cause?
pH, the addition of nutrients into waterways, still calm waters, upwelling brings nutrients to the surface, slightly increased temperatures, sunlight.... there are many factors that facilitate a red tide or a "harmful algae bloom".
How does the moon cause high tide and low tide?
the gravity
