The trunks of Palm trees do not get thicker as they age; rather, they simply grow taller. Some Palms have trunks that are as skinny as pencils. Fossil Palm trees date back 100 million years to the Jurassic Era. Muslims regard the Date Palm as the tree of life, as its roots can be traced back more than 5,000 years.
In this article. Tapeworms are flat segmented worms that live in the intestines of some animals. Animals can become infected with these parasites when grazing in pastures or drinking contaminated water. Eating undercooked meat from infected animals is the main cause of tapeworm infection in people.
We begin with the polychaetes (btistle worms). Polychaetes, like the earthworms are segmented (annelid) worms. Earthworms, leeches and some freshwater worms belong to a group called the oligochaetes, since they have only a few spines (chaetae) per segment.he tentacles of some Terebellids may extend for a metre or more in length. Left: a computer model of a polychaete based on Eunice aphroditois, the bobbit worm. These worms eat algae, crustaceans and other worms. These worms frequently reach 2 to 3 metres in length, but 6 metre giants have been reported.