Which of the following does NOT describe an estuary?

partly enclosed area with brackish water strongly affected by high and low tides

partly enclosed area of brackish water not affected by high and low tides

home to large variety of flora and fauna

highly productive and polluted area

Question

Which of the following does NOT describe an estuary?

 partly enclosed area with brackish water strongly affected by high and low tides

 partly enclosed area of brackish water not affected by high and low tides

 home to large variety of flora and fauna

 highly productive and polluted area

nincompoop · Answer

what have you read about estuaries?

anonymous · Answer

nothing really

anonymous · Answer

can you please help me

anonymous · Answer

The answer is B, Estuaries ARE strongly affected by tides.

anonymous · Answer

thank you 




Coral reefs face many threats. The crown-of-thorns starfish is an example of a ________________ threat.

 chemical

 agricultural

 natural

 man-made

anonymous · Answer

can you help me with this please?

anonymous · Answer

I do not know anything about that. I suggest you look it up

anonymous · Answer

thank u @TheDoctorRules  @thomaster can you help me please

thomaster · Answer

Well this starfish isn't man made, so we can cancel D.
They're also not chemicals, so cancel A.
Coral reefs are not agriculture, so cancel B.

anonymous · Answer

thank you soooooooooooooooooooooo much and my last question is 

Coral reefs are usually found near the equator between the Tropic of Cancer and the Tropic of Capricorn. Which of the following best describes why this is an ideal location for coral?

 cool water temperatures

 wave action

 plenty of sunshine

 changes in salinity

thomaster · Answer

what would be your guess?

anonymous · Answer

will it be cold water temperatures

thomaster · Answer

Are you sure it's cool water temperature and not warm?

thomaster · Answer

because the water is most likely warm near the equator

anonymous · Answer

true but its not one of my choices

thomaster · Answer

Oke, well coral likes a stable salinity and warm water

anonymous · Answer

so D?

thomaster · Answer

No, they like stable salinity, so no changes in salinity :P
It's either B or C
which one is more probable?

anonymous · Answer

WAVE ACTION?

thomaster · Answer

Are there waves underwater? And why would the coral reef benefit from waves:?

anonymous · Answer

U RIGHT  plenty of sunshine

thomaster · Answer

yes :) corals contain a lot of algae which need sunlight to photosynthesize

anonymous · Answer

THANK U

thomaster · Answer

no problem :)