Answer:
The process where organisms naturally go and adapt to enviroment where they can most likely survive and produce more offspring.
Explanation:
Theory was first made by Charles Darwin and is now believed to be the main process that brings about evolution.
Answer: C. The sign of the enthalpy of the reaction reverses.
Explanation: Enthalpy of a reaction is the net heat absorbed or released during a chemical reaction.It is represented by
. It is negative for exothermic reactions in which heat is released and is positive for endothermic reactions in which heat is absorbed.
When a chemical reaction is reversed the heat of the reaction changes its sign.

The decomposition of calcium carbonate is an endothermic reaction as heat is required to break the bonds and thus energy is absorbed.

When the reaction is reversed, the reaction becomes exothermic as now bonds are getting formed and energy is released.
Answer:
Chromosomes
Explanation:
Genes are segments of DNA, but they are found in Chromosomes.
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