Answer:
Some factors that might causes changes in the population of grasshoppers are:
1. Weather
2. Cultivation
 
        
                    
             
        
        
        
Answer:
A rise in blood carbon dioxide concentration.
Explanation:
The feedback regulation may be defined as the process in which the end product of the metabolic pathway regulates the homeostasis of the body. Two main types of feedback are positive feedback and negative feedback.
The negative feedback mechanism occurs when the end product of the reaction is responsible for the shutdown of the metabolic pathway and decreases its concentration. The breathing is controlled by the negative feedback mechanisms, the increase in carbon dioxide concentration acts as the negative sensor as this sensor is mainly responsible for the increase in amount of oxygen level and maintain homeostasis of the body.
Thus, the correct answer is option (c).
 
        
             
        
        
        
The combination of compression and high temperature causes the carbon bonds in the organic matter to break down. This molecular breakdown produces thermogenic methane natural gas.
        
             
        
        
        
Desert ecosystems. 
Explanation
It’s very dry in the Southwest. They get hardly any precipitation and it’s very hot.