As to the origin of life specifically, science has not yet explained how it happened. Scientists have some ideas, and I think the most widely accepted one so far is that RNA (the predecessor to DNA) got assembled in undersea volcanic vents a long, long time ago.
This is a huge simplification of the hypothesis, and I'm not qualified to give you the details. You can hit up Wikipedia for a better description.
However, it's almost universally accepted among scientists that once the first self-replicating cell existed, it became the ancestor of all life on earth.
Some of the other answers I'd give would be redundant, but as for Christianity specifically:
I used to be an evangelical fundamentalist. The process of deconversion was incredibly painful and the only Christians to ever try to talk to me about Christianity since then has been my family, and usually not on good terms. I would probably be a little more pressing than others here if approached by a Christian at random simply because I understand the language and belief system so well. I don't think most Christians are bad people or do bad things, but I do think they're wrong.
This is a huge simplification of the hypothesis, and I'm not qualified to give you the details. You can hit up Wikipedia for a better description.
However, it's almost universally accepted among scientists that once the first self-replicating cell existed, it became the ancestor of all life on earth.
Some of the other answers I'd give would be redundant, but as for Christianity specifically:
I used to be an evangelical fundamentalist. The process of deconversion was incredibly painful and the only Christians to ever try to talk to me about Christianity since then has been my family, and usually not on good terms. I would probably be a little more pressing than others here if approached by a Christian at random simply because I understand the language and belief system so well. I don't think most Christians are bad people or do bad things, but I do think they're wrong.
