Author Question: What phylum contains sea jellies? A) Porifera B) Cnidaria C) Echinodermata D) ... (Read 84 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?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

For a complete list of videos, visit our video library