Answer:
Gametogenesis is the production of gametes from haploid precursor cells. ... During the process of gametogenesis, a germ cell undergoes meiosis to produce haploid cells that directly develop into gametes.
Explanation:
The appearance of fossils would the the answer.
Although there has been some scientific debate about what fossil strata should mark the beginning of this period, the "International Geological Congress" determined that the Cambrian period was approximately 543 million years ago of which the first appearance in the fossil record of worms that made horizontal burrows was discovered.
Ok so bones is number one
Muscle are number 2
Joints are number 3
And nerves are number 6
Photosynthesis means like sun and plants it would be that numerical order in which this would compare to the broad and conjust modives
