This variation is an example of disruptive selection. The other choices given in the question are incorrect and can be easily neglected. The correct option among all the options that are given in the question is the fourth option or the last option. I hope that this is the answer that has come to your desired help.
You need sodium hydroxide, to add to the solution which should "buffer" the pH levels.
Primary producer, because it has to make it's own food.
<span>The genotype of the control bulls he should use to test for the heterozygous genotype is homzygous recessive. A creature can be homozygous dominant, on the off chance that it conveys two duplicates of a similar overwhelming allele, or homozygous recessive, on the off chance that it conveys two duplicates of a similar passive allele. Heterozygous implies that a living being has two unique alleles of a quality.</span>
