Answer:
Explanation:
Often times, the property of air masses is a function of where they originate from especially with respect to latitude. 
An air mass is certain amount of air with some unique set of temperature and vapor component. 
- Air masses differs from places to places based on where  they originate. 
 - Continental air masses are usually dry and cold because there is little to no water on a land mass. 
 - Air masses that originates from the surface of the ocean are predominantly moist. 
 - In polar regions, the air mass is cold. 
 - Around the tropics, they are usually warm due to insolation here. 
 
 
        
                    
             
        
        
        
Answer:
I thibknits 175
Explanation: It's the furthest 
 
        
             
        
        
        
Answer:
1)m=89.01 g
2)V(max) = 97.3 cm/s
Explanation:
Given that
K= 15 N/m
The maximum amplitude ,A=7.5 cm = 0.075 m
Given that 31 oscillations in 15 seconds ,this means that frequency f
f=\dfrac{31}{15}
f=2.066 Hz
lets take mass of the ball = m kg



m=0.08901 kg
m=89.01 g
The maximum speed 
V(max)= ω x A
ω = 2π f= 2 x π x 2.066 = 12.98 rad/s
V(max) = 12.98 x 0.075 =0.973 m/s
V(max) = 97.3 cm/s
 
        
             
        
        
        
the answer should be b) molecules because molecules are what creates a amino acid