In his study of pea plants, gregor mendel used which method to produce offspring?

cross-pollination. He cross pollinated parents with different traits.

Explanation:

Gregor Johann Mendel was a great scientist/ Biologist that was born on the 20th day of the month of July, in the year 1822 in Czechia and he died on the 6th day of January, in the year 1884. Gregor Johann Mendel made significant effect on the aspect of genetics and heredity in Biology and science generally.

If you look at the world today, you are going to see beautiful and improves varieties of plants and animals which are known as hybrids.

For his research on inheritance, he cross pollinated parents with different traits to produce offsprings.

maybe because its impossible for balloons to lift a whole entire house.