Okay below are the key points contained in this article:
Point A
Scientists find no evidence of recent tectonics, volcanism or erosion on a scale nearly as great as the global Flood model requires.15
Point B
There are also too many organisms in the fossil record to assert they came from a single generation of living creatures that were killed by the Flood–the earth simply could not support that many organisms.16,17
Point C
The young-earth model also assumes the animals on the ark were unique–they possessed special genetic coding that allowed them to quickly adapt to the post-Flood environment and produce new species. However, nowhere does Bible state the animals on the ark were different or endowed with special qualities. Nor is there a single example from field research that supports this claim. If modern species descended from common ancestors on the ark, we would expect to find evidence of intermediate forms. We would also expect to see thousands of new species arising today. However, nothing we observe suggests today’s species descended from common ancestors on the ark.24
Point D
If God endowed the ark animals with special qualities so they would survive, why did so many species go extinct? And, if only certain animals were endow these special qualities, why did God have Noah take the other animals aboard the ark?
Point E
Young-earth creationists admit this post-Flood migration would have taken many generations to complete.43 If true, we would expect to find evidence of a major radiation from Ararat. However, there is no fossil evidence to support such a mass migration. In fact, many animals, such as the Australian endemic families, have no fossil record outside of their current realm.44 Another problem for the young-earth model is explaining what animals ate on this long journey. Some herbivores have specialized diets. Were these plants flourishing all along their migratory routes? And, with only a breeding pair of each species available, how would there have been enough new deaths to meet the food requirements of the carnivores?45
Point F
Like punctuated equilibrium, the young-earth model would suffer from reduced fitness due to the expression of detrimental recessive mutations.
Point G
Point H
Young-earth creationists point to a host of seemingly distinct animals in a family that can produce hybrid progeny (e.g., horses and donkeys, lions and tigers, dolphins and whales, etc.) as evidence species are descended from the same created "kind."62 The problem with this approach is even though these species may, in some instances, interbreed in captivity, they generally do not do so in the wild. Crossbreeding animals in a zoo or laboratory proves nothing. For the young-earth claim to be true, every animal in a family would have to hybridize naturally. All of the changes observed in the laboratory or breeding pen are limited. What breeders accomplish is diversification with a given type. What is needed is the origin of new types.63 Biologists have not been able to observe the entire sequence of animal species fragmenting into two or more morphologically species. In the vast majority of cases, the rate of change is so slow that it has not even been possible to detect an increase in the amount of differentiation.64
I've separated the points by letters so you can pick a few to argue against.