What marked the end of the Precambrian period? A. The appearance of complex, multicellular animals B. The division between archaea and eukarya C. The emergence of simple, protist-like animals D. The development of DNA-based viruses Mark for review (Will be highlighted on the review page)

A. The appearance of complex, multicellular animals

Explanation:

Precambrian period is the earliest period in the history of the earth. It was characterized by different evolutionary characteristics and differences.

The end of this period was marked with The appearance of complex, multicellular animals which were able to perform complex tasks

lysosome is this part of the cell is surrounded by a very thick outer membrane to protect the rest of the cell from its strong enzymes.

the most common type of reef is the fringing reef. this type of reef grows seaward directly from the shore. they form borders along the shoreline and surrounding islands.