No the amplitude of each waves are different on different cardiac cycles. 
<u>Explanation:</u>
- The PQRST waves are used to represent the atrial and ventricular depolarization and repolarization.  These waves are reflected in ECG.  
- In this as the series, p occupies the first place then QRS complex and at last T wave. In the QRS wave complex,  R wave is said to be the largest wave.  
- The direction and amplitude of r wave depend on the electrical picture. The R wave represents the ventricles depolarization so it is the largest wave.
 
        
             
        
        
        
1. D) ball and socket 
2. B) finger and elbow
3. B) hypodermis, dermis, epidermis
4. C) sunscreen
5. D) two bones meeting at a joint
        
                    
             
        
        
        
Answer:
1. an offspring with two identical alleles for a trait is homozygous.
2. only some traits are inherited
3. offspring inherit two alleles for a gene from each parent.
 
        
             
        
        
        
The overall function of the digestive system as digestion and absorption of food stuffs, and the general activities of each digestive system organ is; Ingest, digest, absorb, defecate. 
Ingestion involves placing food into the mouth, propulsion involves propelling food from one organ to the next using peristalsis. Mechanical digestion involves the physical fragmenting food into smaller particles. Chemical digestion refers to breaking down food molecules to building blocks by enzymes. Absorption is the transport of digested end products to blood or lymph; and finally Defecation which involves the elimination of indigestable material from GI tract by anus. 
        
             
        
        
        
Answer:
i think B. 
Explanation:
That destroys a habitat for many species