The answer is going to be D) because it usually occurs between 12-14 days before your <span> menstrual cycle begin </span>
        
                    
             
        
        
        
A hydrometer is an instrument that measures the specific gravity (relative density) of liquids. The ratio of the density of the liquid to the density of water. A hydrometer is usually made of glass, and consists of a cylindrical stem and a bulb weighted with mercury or lead shot to make it float
        
             
        
        
        
No they can not 
Glad I could help
        
             
        
        
        
Answer:
It is always important to turn off the hot plate because objects around it can catch on fire, things could explode if something is left on it, or someone could get injured. 
Yes, you can tell if the water is boiling or if there is steam in the beaker/condensation. 
Hope that helps and have a great day!
 
        
                    
             
        
        
        
The plant
cells vacuole is larger compared to the animals cells' because the plants
vacuoles takes up 90% of the cells volumes. Vacuole stores food for the
organism. In this case since, plants manufacture their own food, it is
necessary for it to have a large storage space or a large vacuole.