Forests are both of monetary and non-monetary value for humans. This abundant source of natural materials are of good use to many industries that have been made by humans. Without forests, biodiversity of organisms and the existence of natural resources humans use on a daily basis are directly affected.
DNA and RNA each contain four nitrogenous bases. They have 5 not 4.
Octopus and squid have little suction cups on their tentacles. It helps with sticking onto food (so it doesn't get away) and also helps with sticking into things. If it wanted to camouflage into some rocks, it can use its tentacles to cling to to the rock.
Tentacles can also grab and carry things. Scientists have made tests where they would put a clam in a jar with the lid screwed on. The octopus would grab onto the jar and use its tentacles to twist the lid off.
Without tentacles, octopuses and squids would be pretty helpless and probably couldn't survive in the deep ocean.
