When heat is added to a substance, the molecules and atoms vibrate faster. Solids, liquids and gases all expand when heat is added. When heat leaves all substances, the molecules vibrate slower. The atoms can get closer which results in the matter contracting.
Answer:
The correct answer would be Gene pool for the population.
A gene pool is defined as the sum total of all the genes present in an inter-breeding population at a specific time.
It includes all the alleles of all the loci within the genes of a interbreeding population or species.
The composition of the gene pool of a population can change with course of a time due to evolution.
A large and diverse gene pool enhances the ability of a population to adapt, survive and evolve in a nature.
The merits include;
It's easy for a female to choose desired traits based on coloration and mastery of ritual in place of invoking a fight.
It gives the female more options to choose from as there are fewer deaths occasioned by fighting of males
Disadvantage
It isn't necessary true that a male with ritual ceremony mastery is the best among the pack.
Answer:
c. the hummingbird and the tubular flower it pollinates
