Organism live in an ecosystem and(1) _______will each other. these interactions may benefit or harm other organisms. others may not be harmed or affected at all. some organisms live in a close relationship with other organisms. (2)______is an ecological relationship where both organisms Are benefited. this relationship exists between soil bacteria rhizobia and legumes like peanut and bean plants. in this mutualistic relationship, the legumes provide a (3)_____by forming root modules for the bacteria to live. the bacteria, in return, (4)______the legumes by converting nitrogen from the air into ammonia that the plant can use for(5)_____both the legumes and bacteria are benefited in the (6)______(7)_____is another relationship where one organism is benefited while the other is hunted and killed. in a marine ecosystem, shark eats 28 small fishes. the shark is called the (8)_____and the small fishes eaten by the shark are the(9)_____when two or more population use a limited supply of resources (10)____may occur among the organisms, they complete for(11)_____light and (12)_____in this relationship, both the organisms are(13)____in ecosystem,birds build their nests on trees but the tree in not affected at all. this relationship is called(14)______the birds benefit from the relationship. they are called the(15)____. The tree is the (16)________ and is not affected nor harmed from the relationship is (17)_________in which one organism lives at the expense of another. A parasite depends on the host for food, nourishment and shelter. Termites live on trees and eat the inside parts of the tree which may cause its death. The termites are called the (18)______ and the tree is the host.