Mitotic spindles are microtubule-based structures that separate chromosomes during mitosis. So the cell would lack structure.
Heart Blood vessels. (Arteries, Capillaries, and Veins)
+ not having enough food for everyone
+ how many people migrate
+ birth/death rates
+ how much water there is
+ how much nutrients/minerals are available
+ how much trees/oxygen is available
Sedimentary rocks are formed from pre-existing rocks or pieces of once-living organisms. They form from deposits that accumulate on the Earth's surface.