I nedd help pliis

1. G1 which is growth

2. S-phase  which is DNA synthesis

3. G2- Growth and preparation for mitosis

4. Mitosis which is cell division

    Cytonkeiss

       Telophase

         Anaphase

         Metaphase

         Prophase

Explanation:

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.