Answer:
B. often use tube feet to move around in their environment
Explanation:
Tube feet are tiny tubular projections of echinoderms on the underside (oral side). They are a member of the echinoderm water vascular system.
Tubular feet are used for feeding, breathing and shifting. They are arranged around the sides, in grooves. They work by hydraulic pressure. They are used to transfer food in the centre to the oral mouth, and may stick to surfaces. Tube feet allow certain animals to stick and travel slowly to the ocean floor. for example starfish uses tube feet for the above functions.
Hence, the correct option is B.
 
        
             
        
        
        
Answer:
Explanation:
We are being provided with little information about the question in the study.
The 50 ml is required to make an unknown solution which has a mass of 5g, 
SO, we are to determine the amount of grams that will be needed to make the product.
We are not given information about the product, as such this will be difficult and impossible to answer.
You can add the additional information required in the comment section below and further explanation and the detailed solution will be provided.
Thanks!!!
 
        
             
        
        
        
The answer to your question is t<span>he signal travels through the nerve of the hand to the spinal cord and then to the brain.
Hoped I Helped!</span>
        
                    
             
        
        
        
The process is called ovulation
        
             
        
        
        
The predators will feed on the prey lowering their birthrates, but while feeding on the prey, the predators' growth rate will lower since there is less prey to feed on.