The black walnut tree secretes a chemical from its roots that harms neighboring plants which leaves more light for the black walnut to grow. Which example of species interaction does this represent? A: Predation
B: Parasitism
C: Competition
D: Mutualism

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.

If you want to double a batch of brownies you must have double the ingredients before you start cooking similarity a cell must double its contents including its dna prior to dividing

How do specific cell structures and organelles contribute to maintaining homeostasis in the cell?