Evolution, Creationism and Intelligent Design
Evolution is the scientifically accepted system which explains how we are in our current form. The easiest way to explain evolution is by example. Say that Africa was full of short necked giraffes that all had to compete for the same leaves on trees as all other grazing creatures. Those giraffes in the herd that had longer necks would be able to reach more leaves. They would therefore be more healthy and live longer, having more kids. Those kids would naturally have long necks like their mommies and daddies. Over time, the short necked giraffes would die out, because they would not be as healthy as the long necked ones were. This results in long necked giraffes.
Creationism argues that God created - in a single flash - all creatures of the earth exactly as they are today. Creationism says that no creature ever changed from that initial flash of creation. The argument against creationism is pretty clear - we ourselves have made new dog and cat breeds that exist in modern times, that did not exist 4,000 years ago during recorded history. That is why few people in modern times believe in Creationism. Instead, those who are opposed to Evolution believe in Intelligent Design.
In Intelligent Design, the theory is that animals and people DID change over the years, since we can clearly see that in skeletal and fossil records. However, Intelligent Design proponents say that these changes did not happen because of nature. They say that God deliberately charted the paths that caused various creatures to change and evolve over time. It was a deliberate guided pathway to reach the current ends.
Lisa's Biology Pages