Author Question: What phylum contains sea jellies? A) Porifera B) Cnidaria C) Echinodermata D) ... (Read 93 times)

melina_rosy

  • Hero Member
  • *****
  • Posts: 531
What phylum contains sea jellies?
 A) Porifera
  B) Cnidaria
  C) Echinodermata
  D) Platyhelminthes

Question 2

What are the amphidromic points of the world ocean, and approximately how many are known to exist?



elyse44

  • Sr. Member
  • ****
  • Posts: 319
Answer to Question 1

B

Answer to Question 2


The amphidromic point of an ocean is the node or nodes near the center of the ocean basin. This point is a no tide point in the ocean and is the point around which the tidal crest rotates through one tidal cycle. Tidal crests sweep around amphidromic points like the spokes of a wheel from a rotating hub. Tide waves move around these points, counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere. The energy is dissipated across the ocean radiating the crests toward distant shores. About a dozen amphidromic points exist in the world ocean, with five of the points being in the Pacific.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

For a complete list of videos, visit our video library