Explanation:
The products in a reaction are the species on the right hand side of a chemical equation.
The reactants are the species on the left hand side of the equation.
A + B ⇒ C+ D
The reactants A and B, products are C and D.
Reactants are the species combining together.
The products are the results of the combination.
Types of chemical reactions;
Combination or synthesis; in this type of reaction, two species combines to give a product or products:
A + B ⇒ C+ D
Decomposition or cracking: a specie breaks down into one or more products:
A ⇒ B + C
Single displacement: one specie replaces another in a reaction:
A + CD ⇒ AC + D
Double displacement: species replaces another in a reaction:
AC + BD ⇒ AD + BC
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Actual renewable source (c)
Answer: D. a fertilized egg cell
Totipotent stem cells are cells which are formed when a sperm fertilizes a egg resulting in a zygote. A zygote being a totipotent stem cell divides many times to develop specialized cells in a new human being. Therefore, a fertilized egg cell has greatest number of totipotent stem cells.
In this population, what will occur is that there will be no evolution. Mutation is neccessary and important because they provide varitations that can result in evolutionary change. Other factors needed for evolution to occur are migration and selective pressure.
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