In a study of identical twins by the National Institute of Mental Health, when one twin had schizophrenia and the other did not, the schizophrenic twin always showed reduced activity in which lobe of the brain when compared to the unaffected co-twin?
A. parietal
B. medulla
C. occipital
D. frontal

The preferable option will be - D.

D. Frontal lobe.

Explanation:

The exact cause is unknown. According to the experts, a combination of factors such as physical, psychological, environmental, and genetic factors together can lead a person towards schizophrenia. A stressful or emotional life event can lead the person towards schizophrenia.

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.