Answer:
sugar and oxygen are the correct option
The correct answer is "experiment". Science is repeatable, testable, demonstrable, and protocol. Check out creation.com for more info on science.
The answer you are looking for is "Plucking" :)
Answer:
Sometimes, there can be random fluctuations in the numbers of alleles in a population. These changes in relative allele frequency, called genetic drift, can either increase or decrease by chance over time. ... Genetic drift can result in the loss of rare alleles, and can decrease the size of the gene pool.