I think that the best phrase to fit into the blank is a "scientific theory".
A scientific theory is developed through experiments which use the scientific method, and a theory can be improved if additional data is available or if people provide suggestions which make the theory fit the data better.
Mitosis occurs in somatic cells when a liver cell divides to create new liver cells it will create identical daughter cells, identical to the parental cell, this guarantees the genetic composition, function and type of cells from one generation of cells to the next.
Answer:
some of the animals that feed on the grasshoppers will die
Explanation:
if they do not have the regular supply of food, they will die of hunger
Studies of populations that reveal correlations between dietary habits and disease incidence are epidemiological studies.
