Answer:
D. all of these answers are correct
Explanation:
Actin binding proteins are responsible for the regulation of cytoskeletal microfilaments.
Actin binding proteins have the function to 
1. Maintain the population of actin monomers, 
2. regulate the polymerization of filaments 
3. bind to and block the growing ends of actin filaments
4. assembly actin 
5. bind to the sides of actin filaments 
7. cross-link actin filaments
 
        
             
        
        
        
Photosynthesis is the process by which green plants make their food by tue help of sunlight and chlorophyll using carbondioxide and water to form oxygen and glucose 
cellular respiration-cellular respiration definition. The chemical process that generates most of the energy in the cell, supplying molecules needed to make the metabolic reactions of an organism run. Note: The main carrier of energy in metabolism is the molecule ATP.
 
        
        
        
Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water
Other answers:
Overpopulation.
Pollution.
Global Warming.
Climate Change.
Genetic Modification.
Ocean Acidification.
Water Pollution.
Deforestation.
 
        
                    
             
        
        
        
Answer:
microvilli, actin filaments
Explanation:
The apical ends of intestinal cells face the intestinal channel and have long processes that facilitate the absorption of nutrients. the name of these processes is microvilli and actin filaments from the cytoskeletal element forms their internal skeleton.