Answer:
 I believe it would be because of earths rotation. 
Explanation:
 
        
                    
             
        
        
        
Answer:
A process of change in a population through genetic variation.
Explanation:
Evolution is the process of change in heritable characteristics of populations of organisms over several generations as it allow natural selection in it.
Genetic variation which refers to differences in gene frequencies is an important force in evolution which relies of natural selection to cause an increase or reduce gene frequencies in a population. Evolution lead to changes in genetic material of populations over time which make them to develop genes that will allow them to adapt to their environment for survival and reproduction.
 
        
             
        
        
        
Bulk flow refers to the movement of phloem sap from a source to a sink in plants.
<h3>What is Phloem?</h3>
This is a vascular tissue found in plants which helps to transport and distribution of the organic nutrients derived from photosynthesis.
Bulk flow occur when these nutrients present in the phloem sap are moved  from source to sink.
Read more about Phloem here brainly.com/question/983997
 
        
             
        
        
        
Peristalsis is the name for the waves of contractions that propel substance s along a tract. It is a series of wave-like contractions that moves food to different processing stations in the gastrointestinal tract and starts in the esophagus when the boluses of food are swallowed. The wave motion is produced by the longitudinal smooth muscles that line up the esophagus, stomach, small intestines and the colon and is triggered by presence of food.