Not directly. Detectors can convert to a form that is visible to the human eye. Hope that helps
        
             
        
        
        
Answer:
the answer is b.
Explanation:
The inside of bone is called marrow, which is responsible for creating blood cells, vital to homeostasis. obviously, bone gives us support, and shape.
so, out of the choices, the answer is b.
 
        
                    
             
        
        
        
Answer:
Any form of precipitation like rain, snow, fog, hail, and even dust that has acidic components. When the acidity of a lake  increases, the water becomes clearer and the all the animals decrease.
Explanation:
 
        
             
        
        
        
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.
 
        
             
        
        
        
Answer:
The right answer is 1 and 4
Explanation:
A hormone is a biologically active chemical substance, synthesized by a glandular cell secreted into the internal environment where it circulates, acting remotely and by blood on receptors specific to a target cell. It transmits a message in chemical form and therefore plays a role of messenger in the body.
The emitting organ thus acts at a distance on all of the target organs of the organism or of neighboring organisms of the same species, or even of symbiotic organisms whose receptors are activated in contact with specific hormones (lasting interactions).