Also on pt 1:
palaeontology: study of fossils. the discovery of transitional forms of fossils support Darwin's theory of evolution. Transitional forms: archaeopteryx (those giant flyin birdish dinosaur which u c every day in sci fi movies such as jurassic park) exhibiting both a bird (have wings) and a reptile (bonie tails). Hence natural selection (variations with the most superior characteristics got to pass it to their offspring, namely archaeopteryx with the wings)
biogeography: study of orgainism from different places on earth. when they are separated by the tectonic plates movement, they evolve divergently according to the different environment they went into.
comparative anatomy: mainly the pentadyctal limb structure between human, whales, bat and horse(or was it lion??). Similiar structure implied they have a common ancestor.
biochemistry: all organism on earth, regardless of species, genus etc, all have similiar chemical compositions in our bodies, also same biochemical processes whereby we obtain our energy from (with the exception of a few anaerobic bacteria, some of which feed on sulfur). Hence this implies that we all have a common ancestor.
lolz, there may be loads of mistakes and errors... so if ne one is dissatisfied, plz post here!!!