Answer:
i believe it is a
Explanation:
earth's orbit should not have an effect.
 
        
                    
             
        
        
        
Answer: 
microvilli
Explanation:
having microscopic projections called microvilli. The epithelial cells of the proximal convoluted tubule are adapted.
        
             
        
        
        
Answer:
Asexual reproduction is a type of reproduction that doesn’t involve gametes fusing or the change in the number of chromosomes. A spider plant is the perfect example of asexual reproduction, but when it comes to plants like that, it’s referred to a type of asexual reproduction called vegetative propagation.
        
                    
             
        
        
        
Answer:
1 , 11 and 111 are correct
 
        
             
        
        
        
Answer:
3. Household wastes
2. Landfills
1. Agriculture
Explanation:
The groundwater is more and more contaminated, and there are numerous ways in which the contamination occurs. The causes of pollution mainly come from the human activities. The humans use all sorts of chemicals, fossil fuels, paints, and often there is waste from them, waste that is dumped into the drainage, and occasionally reaches the groundwater. The leaking of linings also manages to cause lot of damage, as very often it can reach the groundwater, causing heavily contamination of it. The agriculture, as much as it is needed, is a big polluter too, and the pollution mainly comes from the usage of pesticides, herbicides, and fungicides, which wash through the soil and end up in the groundwater.