14 Mitosis, the process by which the nucleus of a cell divides into two nuclei, each containing a
complete set of the cell's chromosomes, is essential to life because it
a. Contains four stages for gametes
b. Maintains genetic continuity from one generation to the next
3. Controls cell functions to ensure successful development.
d. Provides energy for the cells

the missing space is phylum

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.