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1. Bony fish drink a lot of seawater to say hydrated and excrete the concentrated salts through the gills and gut. With cartilaginous fish, ...

1. What makes cartilaginous fish different from other fish? Give examples. Skeletons made of cartilage, an example is the heart and blood....

1. What are examples of marine arthropods?   There are crustacea, Pycnogonida also called "sea spiders," and Merostomata also cal...

Life Lesson from a Sea Star "When something is taken from you, it is horrible, but trust it is God's will and something else wil...

1. a) Phylum Poriferia-the sponges     b) Phylum Coelenterata- Jelly fish     c) Phylum Platyhelmin thes- the flat worms     d) Phylum Ne...

The BIG QUESTION?                   Why should we humans be concerned about overfishing?               Because valuable fish stocks, as we...

1. When light has low rates it then leads to low nutrients, it affect the amount of trophic levels in the ecosystem. 2. The amount of ener...