Answer:
Examples of positive symptoms are hallucinations, delusions, and repeated movements that are hardly to control or movement disorder. 
Explanation:
Schizophrenia is severe mental disorder, which usually starts between the age of 16 - 30. This disorder affects the way people think, behave and feel. 
Generally, its symptoms can be grouped into three, which are
* Positive symptom .... This is when people are manifesting psychotic behaviors which are never seen in healthy people. 
* Negative symptom..... Its can be related to normal emotions. Examples are reduced feeling, speaking and expression e.g facial expression. 
* Cognitive symptom..... This include having trouble in paying attention and trouble with memory. 
 
        
             
        
        
        
Answer:
You have not consumed lactose from dairy recently
Explanation:
According to the diagram, there is a represssor element in the regulatory region of the operon. This repressor is blocking the RNA polymerase, that is bound to its promoter region upstream of the genes, from transcription. The repressor is mostly the lac repressor that switches of the operon in the absence of lactose. 
 
        
             
        
        
        
The changes will occur in an aquatic ecosystem as a result of nutrient loading are: changes in natural flow regimes as a result of water extraction and supply direct modification or destruction of important habitats barriers to the movement of plants and animals. For example within rivers and between rivers and their floodplain effects of poor water quality competition from introduced, <span>exotic animal and plant species. </span>