Answer:
2. temperature
Explanation:
The independent variable is the variable that you change. Since you are changing the temperature to find bacteria growth, bacteria growth is the dependent variable and ph level is the control variable.
Many microbes come from the ocean floor, these microbes often feed small wildlife, like plankton and plants, which then go on to feed larger wildlife.
The correct answer is B. Disruptive.
I disruptive natural selection the extreme values for a phenotype are favored. This causes a disruption in the middle of the graph for phenotype distribution, as there is a selection against the average phenotype, hence the name.
In this case of worms, the longest and the shortest worms are the most present, therefore we can conclude that the natural selection is disruptive and favors both of the extremes (short and long) of the phenotype.
Answer:
The songs will become more similar to each other.
Explanation:
Speciation may be defined as the process of formation of new species by the external or internal force. Two main types of speciation are allopatric speciation and sympatric speciation.
Two frog population belongs to the same species that lives two neighboring lakes. The irrigation makes the pond wetter and connect the two species. The songs of the two species tends to be more similar in both species s singing is genetic basis and allows the mating between two species.
Thus, the correct answer is option (c).
