I will delight in hearing how such difficulties can be addressed.
Hi sidelined,
If you are looking for a scientific answer I do not think you will not find one.
Since you want an answer I will propose one.
In the beginning God created the heavens, the earth, man, animals,
and every living thing, in one day. I am not talking of the 7 days of Moses in Genesis 1:2 - Genesis 2:3.
Remember there was over a hundred years to get ready for the flood.
There are animals that hibernate for many months at a time.
But that aside a power that could make the universe in one day and all living things in it should not have a problem with sustaining the animal life on board the ark.
He could have put 50 feet of water on the earth in 1 nanosecond if he so desired. He could have also removed it the same way.
He spoke the trees and all vegetation into existence in the beginning why could He not do it the second or third or fourth time if necessary.
God does not need evolution for things to grow. He speaks and they exist.
So the problem is not with the flood or any other things in the Bible, save one.
The problem is Genesis 1:1.
If someone believes Genesis 1:1 they have no problem with the rest of the Bible.