Answer:
I think bacterial cell becausea microscope look into small organisms that we can't see with a naked eye
 
        
             
        
        
        
The water is able to leave in and out of the cells because there is a cell membrane splits the bilayer of tissue and then the water start leaving and  coming back in again from  the stage of osmosis.
        
                    
             
        
        
        
A is incorrect, ovulation happens around day 14. B. is correct, during the luteal phase LH from the anterior pituitory gland stimulates the corpus lutem to secrete progesterone. C. is incorrect, the follicular phase is when FSH is released from the anterior pituitary. D is incorrect, the luteum is stimulated in the luteal phase.
        
                    
             
        
        
        
"Water quality" may include the amounts of dissolved oxygen
and the levels of algal growth, pollutants which may be present and the pH level. Water quality effects also which types of organisms can
survive in a body of water.
 Shellfish require a high level
of dissolved oxygen and their abundance is an indication of good water quality. Shellfish are sensitive to changes in the ecosystem and they cannot easily escape changes in the water quality. These are one of the reasons why shellfish are good indicators of water quality.