Chromosomes must be copied before cell division so an equal number can go into each new cells.
Answer:
These energy changes are mot changes into kinetic energy . They are changing in bonding energy between the molecules " If heat is coming into a substance during a phase change , then this energy is used to break the bonds between the molecules of the substance .
Explanation:
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Answer:
organisms have the amazing ability to make (produce) their own energy-rich food molecules from sunlight and simple chemicals.
Explanation:
ATP is very important. It transports the energy necessary for all cellular metabolic activities in living things.