Question 4 (1 point) islare in the center of a well known commemorative plate often confused with the Aztec Calendar

Aztec sun stone.

Explanation:

The Aztec sun stone is a large sculpture made by the Aztecs in pre-Columbian Mexico. It is richly decorated with Aztec characters and symbols in a circular pattern carved in relief on a flat surface. The stone is of basalt, 3.7 meters wide and weighs 24 tons. The sunstone was probably used primarily as a ceremonial altar, including for the Aztec human sacrifices, and not as an astrological and astronomical map.  Today, it is located in Mexico's National Museum of Anthropology in Mexico City.

the wrong statement is - c. a desert had more biodiversity than a marsh.

the deserts are one of the places of the planet where there's the least biodiversity. the reasons for that are the climate and the lack of food sources, which hampers both the number of the species that can survive in it, and the number of the individuals in the species itself.

the marshes, on the other hand, are places where there's perfect conditions for lots of organisms to thrive. the temperature is moderate and nice, the amount of water and the food sources are on a high level, so there's an abundance of both plant and animal life in them.