Answer:
B
Explanation:
The experimental drug has a direct effect on the dependent variable which is the presence of the headache.
Answer:
Left cerebral hemisphere
Explanation:
Research with split-brain patients suggests that the left cerebral hemisphere typically constructs the theories people offer to explain their own behaviors.
Answer:
Natural disasters and human activity.
Explanation:
Both protons and neutrons have the highest atomic mass
Succession is a process which brings change in the composition of species in a community over a period of time. In this process a community undergoes change for the initial colonization of a new habitat. Succession begins with colonization of an area that has not been previously occupied by an ecological community. Succession continues till the climax community occupies that area.