Prince, in regard to all the references to death and dead you found in the Bible, you will find that many of those passages explain what death and the state of the dead really are, which is surely something that we would all like to know. They give us hope that death is not the final end.
And if you searched further, you would find that the Bible does not teach that those who are lost will burn for eternity in the fires of "hell." There are one or two verses in Revelation that seem to say that, but when you consider the nature of the idiomatic expressions, you realize that is not really what the passages mean. On the other hand, there are a multitude of plain statements in the Bible that there is no consciousness in death, and liken death to a sleep, from which we awaken in the Resurrection. There are also plain statements that the wicked--including Satan himself--will be burned up and be eradicated from the universe, so that sin and sinners are no more. To suggest as many Christian groups do that there will always be some hidden away corner of the universe where sinners will continue to sin by blaspheming God in their endless sufferings, is to invest God with attributes that actually belong to Satan, and ignores the Bible statements that God will do away with sin and the suffering it causes completely. Note Revelation 21:4 (NJKV): "And God will wipe away every tear from their eyes; there shall be no more death, nor sorrow, nor crying. There shall be no more pain, for the former things have passed away."
As for the carbon-14 tests to determine age, they depend upon the rate of formation of carbon-14 always being constant throughout the past. But carbon-14 is produced by cosmic rays striking nitrogen atoms in the upper atmosphere and changing them into carbon-14. Then rain brings the carbon-14 down into the lower atmosphere to be taken in by plants, and then by animals that eat the plants, etc. What if a few thousand years ago, something prevented cosmic rays from striking nitrogen atoms in the upper atmosphere? And what if before a few thousand years in the past, it did not rain? Specimens from that time would have no carbon-14 in them, not because it decayed for millions of years, but because the organism never had any to begin with. The account in Genesis talks about waters above the atmosphere--which would block cosmic rays--and also says that before the Flood, it never rained, but that the earth instead was watered by a heavy mist that arose out of the earth every morning.