Answer:
The invention of the electron microscope allowed them to see organelles and other structures smaller than cells. There is variation in cells, but all cells have a plasma membrane, cytoplasm, ribosomes, and DNA. These similarities show that all life on Earth has a common ancestor in the distant past
 
        
             
        
        
        
Transpiration: process in which plants release water vapor into the air 
Evaporation: process in which water changes to a vapor 
Precipitation: water that falls from clouds toward the ground 
Condensation: water vapor that cools down to form water droplets 
Groundwater: flowing of rainwater downhill to form streams and rivers
        
             
        
        
        
Answer:
The total length will be "10 units". A further explanation is given below.
Explanation:
The given points are:
R(−2, 4) 
S(3, 4) 
T(3, −1)
On applying the distance formula,
⇒ 
⇒       
⇒       
⇒       
⇒       
and,
⇒ 
⇒       
⇒       
⇒       
Now,
The total trail length will be:
= 
= 
= 