Answer: <u><em> actually (d) none of the above</em></u>
 
        
             
        
        
        
Answer:
Sometimes, chemical weathering dissolves large portions of limestone or other rock on the surface of the Earth to form a landscape called karst. In these areas, the surface rock is pockmarked with holes, sinkholes, and caves. The water transforms anhydrite into gypsum, one of the most common minerals on Earth.
Explanation:
I'm sorry if this isn't the answer you are looking for :(
 
        
             
        
        
        
Answer:
There are two types of cell division Mitosis and Meiosis
a cell divides to form diploid gametes during mitosis and haploid during meiosis
 
        
             
        
        
        
d. dynamic and changing
Explanation:
The marketing environment is best described as being dynamic and changing. 
Marketing is a set of activities whereby a company promotes their products and services. 
- A marketing environment refers to all factors that ensures the producers serves their customers better. 
- There is no real static model to make predictions about the marketing environment.
- Since it is targeted and centered on customers, the marketing environment is constantly changing and dynamic. 
learn more: 
Market economy brainly.com/question/10906918
#learnwithBrainly