What showed their greatest diversity during the mesozoic era

Gymnosperms

Explanation:

The gymnosperms were a small, less diverse group during the Paleozoic era compared to the Mesozoic era.

Gymnosperms are vascular plants whose means of reproduction are by means of an exposed seed. Conifers are it dominant plant. They dominated in the Mesozoic era. Gymnosperms were gradually replaced by the more evolved angiosperms.

Gymnosperms are classified into 4 phyla.

Coniferophyta, Cycadophyta, Gingkophyta and Gnetophyta.

the awenser wuold be slaves

answer:

won re-nomination with no opposition he also had the support of his party

explanation:

it saw incumbent president andrew jackson, candidate of the democratic party, defeat henry clay, candidate of the national republican party. jackson won re-nomination with no opposition, and the 1832 democratic national convention replaced vice president john c. calhoun with martin van buren.