Violations of which sins bring about exile?

In Parashat Acharei, the Torah stresses that violation of sexual prohibitions causes exile from the Land of Israel.

Question
Why from all serious sins, does the Land of Israel not tolerate violation of sexual prohibitions?

Answer
Disrespecting the marital covenant will lead to disrespecting the covenant between God and Am Yisrael, and this is something the Land cannot tolerate.

In Parashat Kedoshim, the mitzvah of Orlah is explained.

Question
What is the special connection between the pepper tree and the Land Of Israel?

Answer
The Land of Israel is like the pepper tree where the tree and its fruit have the same taste. This gives a sense of pleasantness not only in the end, but also in the means.

The Mishna in Demai states that there are types of produce which require Ma’aser Demai even outside the Land of Israel.

Question
What is special about the fruits of the Land of Israel that require Ma’aser Demai even outside the Land?

Answer
The quality of the Land’s fruit reflects the spiritual status of the Nation of Israel. If Am Yisrael does mitzvot, then the Land of Israel, which is the source of blessing to the world, can give the Divine abundance.