Fill in the Blanks 4 vocabulary 6Online version Look, read and answer. by Edith Alvarez 1 sustainable biotic predation mutualism develop stored tough abiotic ecosystem fangs 1 . - This furniture is made of wood from sources . 2 . - I the rest of the cake for tomorrow . 3 . - Climate is an example of an factor . 4 . - The factors in an environment include the organisms . 5 . - An is formed by a community of living things , their environment , and the relationship between them . 6 . - This is an example of in which the hippo benefits from the cleaning , while the fish receive food . 7 . - The lions were preparing for near the waterhole . 8 . - Some animals have body coverings to protect themselves from predators . 9 . - The of a cobra inject venom when it bites . 10 . - Your biceps will quickly with that exercise .