Life of an Earthworm
from birth to dissection
The earthworms digestive system runs the entire length of it's body. The double transport system is composed of coelomic fluid that moves with a fluid filled body cavity, the coelom, in a closed blood circulatory system. It has central and peripheral nervous systems.
The average life span of an earthworm is 5 years.
The American Robin's diet consists of all invertebrates. Along with earthworms they like to eat beetle grubs and caterpillars. After eating large quantities of food the robin will have intoxicated behavior and often falls down when walking. The robin is able to locate the worms with its expert sense of hearing.
Earthworms thrive in decaying plant matter and manure. Earthworms are classified into three groups based on their habitat. (1) leaf litter- compost dwelling, non burrowing (2) topsoil- subsoil dwelling, burrow within soil (3) Worms that construct deep and vertical burrows, only venture to topsoil for food
Digestive System: How to Eat Like an Earthworm
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