They are rhetorical questions and should be understood as statements rather than attempts to solicit answers. They could all be rewritten as declarative sentences: 'The olive tree would not have survived.'
The list of objections is actually longer:
[1] A wooden boat made to bible specifications would have broken in half with the first three foot wave.
[2] A wooden boat that size without a rudder would founder and sink with the first set of five foot waves. The largest ships made of wood, by teams of shipbuilders, using better technology have been no longer than 300 feet. The Santa Maria was only 75 feet long. Genesis 6:15 puts the ark at 450 feet. It would be impossible for a ship this size to be made seaworthy, especially in light of the technology and the building team.
[3] There was only one hatch - in the top. How did they muck out the manure of five million species of animals?
[4] Once the salt water receded, where was the vegetation necessary for life? What did the carnivores eat until the planet was repopulated? How did the animals get back to their habitats without food or fresh water?
[5] What did the meat-eaters eat? Every time Noah fed the lions or the tigers, *poof* - another species of animal goes extinct.
[6] There is not enough water on the earth, to flood all the mountains, as specified in the Bible.
[7] If it did rain enough water [magic?] to cover all the mountains in only forty days, the rainfall would be as dense as actual water - like being in a waterfall, which would have destroyed Noah's wooden boat in minutes.
[8] Noah did not bring trees on board. Trees die when drowned. Once Noah opened his boat, he would have seen nothing but deadwood and mud. All the herbivores would starve within days.
[9] If the human race descended from Noah and his sons, we would see a genetic bottleneck in the human genome roughly 4,000 years back. Do we see this? No.
[10] The population of the world is too high if all humanity came from only four breeding pairs a few thousand years ago.
[11] A 450ft boat could not hold two or seven or whatever of every species. The number and variation of species of insects alone-- would have filled up the ark, hundreds of times over.
[12] Why are there ancient civilizations with continuous histories dating back to long before the generation of Noah? China and the Egyptians have such continuous histories, with no world sterilizing flood in them.
[13] Cave paintings in Europe are drawn in Charcoal. Immersion in water would have erased them. These are 15,000 years and older.
[14] If there were a global flood, you would see a universal, world-wide layer of compressed mud dating the that time. This is not the case.
[15] Putting enough fresh [rain] water into the salt oceans to cover the mountains, would dilute it to dangerous levels killing all marine life
[16] The number and variation of species of insects alone would have filled up the ark hundreds of times over. The number and variation of bird species including unique species from all the islands, would have filled up the ark multiple times over.
[17] How did animals get from Australia to the ark, or from the ark back to Australia? The animals living there now go back to pre-historic times, and most are unique to that continent. Koalas require special diets. How did Mr and Mrs Koala carry their food with them all the way from Australia?
[2] A wooden boat that size without a rudder would founder and sink with the first set of five foot waves. The largest ships made of wood, by teams of shipbuilders, using better technology have been no longer than 300 feet. The Santa Maria was only 75 feet long. Genesis 6:15 puts the ark at 450 feet. It would be impossible for a ship this size to be made seaworthy, especially in light of the technology and the building team.
[3] There was only one hatch - in the top. How did they muck out the manure of five million species of animals?
[4] Once the salt water receded, where was the vegetation necessary for life? What did the carnivores eat until the planet was repopulated? How did the animals get back to their habitats without food or fresh water?
[5] What did the meat-eaters eat? Every time Noah fed the lions or the tigers, *poof* - another species of animal goes extinct.
[6] There is not enough water on the earth, to flood all the mountains, as specified in the Bible.
[7] If it did rain enough water [magic?] to cover all the mountains in only forty days, the rainfall would be as dense as actual water - like being in a waterfall, which would have destroyed Noah's wooden boat in minutes.
[8] Noah did not bring trees on board. Trees die when drowned. Once Noah opened his boat, he would have seen nothing but deadwood and mud. All the herbivores would starve within days.
[9] If the human race descended from Noah and his sons, we would see a genetic bottleneck in the human genome roughly 4,000 years back. Do we see this? No.
[10] The population of the world is too high if all humanity came from only four breeding pairs a few thousand years ago.
[11] A 450ft boat could not hold two or seven or whatever of every species. The number and variation of species of insects alone-- would have filled up the ark, hundreds of times over.
[12] Why are there ancient civilizations with continuous histories dating back to long before the generation of Noah? China and the Egyptians have such continuous histories, with no world sterilizing flood in them.
[13] Cave paintings in Europe are drawn in Charcoal. Immersion in water would have erased them. These are 15,000 years and older.
[14] If there were a global flood, you would see a universal, world-wide layer of compressed mud dating the that time. This is not the case.
[15] Putting enough fresh [rain] water into the salt oceans to cover the mountains, would dilute it to dangerous levels killing all marine life
[16] The number and variation of species of insects alone would have filled up the ark hundreds of times over. The number and variation of bird species including unique species from all the islands, would have filled up the ark multiple times over.
[17] How did animals get from Australia to the ark, or from the ark back to Australia? The animals living there now go back to pre-historic times, and most are unique to that continent. Koalas require special diets. How did Mr and Mrs Koala carry their food with them all the way from Australia?
Once again, just translate any rhetorical question into its declarative form: The koalas would not have gotten from Australia to the Middle East. Nor the emperor penguins, nor the tigers.
That's not a problem with critical thinking. That's a feature. We want to keep ideas like that off of our mental maps because they lack sufficient evidentiary support for a critical thinker to believe. These things can only be believed by faith, and we strive to keep such ideas out of the collection of ideas believed to be true. Faith is not be a path to truth. Every wrong idea can be believed by faith. If one considers it important to keep wrong ideas out, he learns the methods of critical thinking, which include the laws of reason and a list of logical fallacies to avoid, ideas that take one off of the path to sound conclusions.
The supernatural and gods are not ruled out. They've never been ruled in. There is insufficient reason to believe that such a thing exists. Also, the concept is incoherent upon close inspection. Nothing that exists and can interact with nature is itself a part of nature. The idea that denizens of this realm are causally connected to ours such that it can inject revelation and answer prayer, but that it isn't detectable from nature even in principle is incoherent.
Are you familiar with neutrinos? They are tiny subatomic particles that only barely interact with other matter. They pass through bodies and even stars like those things are not there, which makes the neutrinos almost not there. Their ability to affect other matter correlates with their detectability. The less effect neutrinos have on other matter, the les detectable they are and vice versa. Taken to the extreme, where neutrinos never interacted with matter, they would be utterly undetectable. That's where the concept of the supernatural breaks down. It posits a realm that can interact with this one but cannot itself be detected.
