What are the 3 steps of natural selection?
the choices are:

offspring

variation

survival of the strongest

overload

survival of the fittest

sensitivity

vibration

operation

overproduction

reproduction

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers