Besides being food for people and animals alike, they are in danger of contamination from pollution.
it is a alage eater, and it has a shell that protects itself from danger.
Clams (the salt water kind) live in the inter-tidal zone to shallow ocean. Fresh water clams live in the bottom of rivers or lakes.
A sentence for clam can be: " Clams are a type of shellfish as well as shrimp."
Yes.
The clam does. Clams and other bivalves have very strong muscles that hold the shells tightly closed whenever they're in danger.
I guess a very long time, a 405 year old clam found in Iceland, go to link: http://abcnews.go.com/technology and enter in "oldest clam" or "old clam" in the search field and the article will come up!!
In the water
it means clam
mantle
clam
Yes, "clam" is a noun. It refers to a type of shellfish found in the ocean that typically has a hard shell and soft interior.
the tidal zone.