Which of the following is incorrect about human oogenesis?" A. Primary oocytes can sit halted in Prophase I for years
B. After puberty begins, one primary oocyte, on average, re-enters meiosis every 28 days.
C. One polar body is produced from each parent cell.
D. Meiosis II begins after a sperm fertilizes secondary oocytes.

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.