The following quotes are taken from "Biology the unity and diversity of life" (1992),
"The first living cells emerged between 4 and 3.8 billion years ago. There is no record of the event."
"The first self-replicating systems must have emerged from this organic soup"
Ernst Haeckal, an eminent German biologist and naturalist, stated that "spontaneous generation must be true, not because it had been proven in the laboratory, but because otherwise it would be necessary to believe in a Creator"
"The evolutionary trees that adorn our text books have data only at the tips and nodes of their branches; the rest is inference, however reasonable, not the evidence of fossils" Stephen Gould, Harvard, Natural History vol 5 1977
The evolutionary model includes reptiles evolving into birds, which involves scales evolving into feathers. However, feathers grow and moult in matched pairs, to keep a balance and help flight, whilst reptile skin is shed in one go. Scales are just part of the surface of the reptilian skin, whereas feathers go through the skin of a bird. The structure of scales and feathers is completely different. There is also a huge difference between reptilian and avian lungs. The avian lung system is highly complex, including 8 to 9 air sacs and air spaces within the bones of the bird, whereas reptile lungs are more similar to mammals.
Observed biological reproduction shows that moths give birth to moths, finches to finches, crocodiles to crocodiles. Even though there are about 450 breeds of dogs, they are all believed to have a common ancestor, which is something like the wolf. The Bible refers to this as reproduction "according to their kind" or "like begats like ".
Sometimes reproduction is illustrated incorrectly, such as horse evolution which is wrongly portrayed in some museums and was discredited in 1950 "... can be readily shown to have been unintentionally falsified and not to be really orthogenetic" Evolutionary Determinism and the Fossil Record, Scientific Monthly.
Rapid adaptation has been observed - such as with fish, lizards and flowers (Catchpoole and Wieland, Speedy Species Surprise, Creation 23, 2001) which is consistent with the creation model, and far quicker than evolutionists expect.
Further reading: What happened to the horse?