During which phase of the cell cycle in eukaryotes is there a checkpoint that determines whether or not the cell is ready to duplicate its dna and commit to starting the process that will lead to cell division?

the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.

high growth (apex)

here is the answer

water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. weathering is the breaking down or dissolving of rocks and minerals on earths surface. once a rock has been broken down, a process called erosion transports the bits of rock and minerals away.