Spindle fibers attach to the sister chromosomes and pull them apart. without them, the sisters would still be attached to each other which means there would be no division.
Because the food will get damaged
Adenosine triphosphate (ATP), energy-carrying molecule found in the cells of all living things. ATP captures chemical energy obtained from the breakdown of food molecules and releases it to fuel other cellular processes.
Solar power is renewable because its unlimited, and the only time we cant get more is during the night. Wind is a renewable energy because as our planet constantly orbits the sun, there will constantly be wind on the planet. Nuclear energy is nonrenewable because it uses a very rare form of uranium (U-235). Tidal power is renewable because it uses the force of waves crashing to create power, there will always be ocean waves.