Genesis 8

1 And God remembered Noah, and every living thing, and all the cattle that was with him in the ark: and God made a wind to pass over the earth, and the waters asswaged;

2 The fountains also of the deep and the windows of heaven were stopped, and the rain from heaven was restrained;

"The windows of heaven were stopped, and the rain from heaven was restrained."
This happens whenever it stops raining.

3 And the waters returned from off the earth continually: and after the end of the hundred and fifty days the waters were abated.

"After the end of the hundred and fifty days the waters were abated."
How long did the flood last?

4 And the ark rested in the seventh month, on the seventeenth day of the month, upon the mountains of Ararat.

The ark came to rest on the mountains of Ararat in the seventh month. But how could this be since the mountain tops weren't visible until the tenth month (8:5)?
How long did the ark float?

5 And the waters decreased continually until the tenth month: in the tenth month, on the first day of the month, were the tops of the mountains seen.

6 And it came to pass at the end of forty days, that Noah opened the window of the ark which he had made:

7 And he sent forth a raven, which went forth to and fro, until the waters were dried up from off the earth.

"He sent forth a raven."

8 Also he sent forth a dove from him, to see if the waters were abated from off the face of the ground;

(8:8-11) Noah sends a dove out to see if there was any dry land. But the dove returns without finding any. Then, just seven days later, the dove goes out again and returns with an olive leaf. But how could an olive tree survive the flood? And if any seeds happened to survive, they wouldn't germinate and grow leaves within a seven day period.

9 But the dove found no rest for the sole of her foot, and she returned unto him into the ark, for the waters were on the face of the whole earth: then he put forth his hand, and took her, and pulled her in unto him into the ark.

10 And he stayed yet other seven days; and again he sent forth the dove out of the ark;

11 And the dove came in to him in the evening; and, lo, in her mouth was an olive leaf pluckt off: so Noah knew that the waters were abated from off the earth.

12 And he stayed yet other seven days; and sent forth the dove; which returned not again unto him any more.

13 And it came to pass in the six hundredth and first year, in the first month, the first day of the month, the waters were dried up from off the earth: and Noah removed the covering of the ark, and looked, and, behold, the face of the ground was dry.

(8:13-14) When did the earth dry after the flood?

14 And in the second month, on the seven and twentieth day of the month, was the earth dried.

15 And God spake unto Noah, saying,

16 Go forth of the ark, thou, and thy wife, and thy sons, and thy sons’ wives with thee.

17 Bring forth with thee every living thing that is with thee, of all flesh, both of fowl, and of cattle, and of every creeping thing that creepeth upon the earth; that they may breed abundantly in the earth, and be fruitful, and multiply upon the earth.

18 And Noah went forth, and his sons, and his wife, and his sons’ wives with him:

19 Every beast, every creeping thing, and every fowl, and whatsoever creepeth upon the earth, after their kinds, went forth out of the ark.

When the animals left the ark, what would they have eaten? [more]

20 And Noah builded an altar unto the LORD; and took of every clean beast, and of every clean fowl, and offered burnt offerings on the altar.

(8:20-21) "And the Lord smelled a sweet savor."
Noah kills the "clean beasts" and burns their dead bodies for God. According to 7:8 this would have caused the extinction of all "clean" animals since only two of each were taken onto the ark.
After this God "said in his heart" that he'd never do it again because "man's heart is evil from his youth." [God killed all living things (6:5) because humans are evil, and then promised not to do it again (8:21) because humans are evil. The mind of God is a frightening thing.]
Does God desire animal sacrifices?
Will God curse the earth?

21 And the LORD smelled a sweet savour; and the LORD said in his heart, I will not again curse the ground any more for man’s sake; for the imagination of man’s heart is evil from his youth; neither will I again smite any more every thing living, as I have done.

22 While the earth remaineth, seedtime and harvest, and cold and heat, and summer and winter, and day and night shall not cease.