They make up a portion of the microplanktic communities living in the oceans of our world and are important because of their value as primary producers in the food chain.
(They; make up; a portion of the microplanktic communities) (the microplanktic communities; living; L:in the oceans of our world) (They; are; important; because of their value as primary producers in the food chain)
They the microplanktic communities They
make up living are
a portion of the microplanktic communities
L:in the oceans of our world
important because of their value as primary producers in the food chain