Many aggressive behaviors are affected by the presence and amount ...

[Mr3Hunna]

Many aggressive behaviors are affected by the presence and amount of the male hormone ___________________ _ acting on the brain.
 
  Fill in the blank(s) with correct word

Question 2

What is the difference between bleeding the lines and purging the lines when using gas equipment?
 
  What will be an ideal response?

[pocatato]

Answer to Question 1

testosterone

Answer to Question 2

Bleeding the lines is removing the gas from all lines so that gas will not escape from any point when
the torch is not in use. Purging the lines means removing undesirable gases from the lines prior to
using the torch.

[Mr3Hunna]

Thanks for the timely response, appreciate it

[bimper21]

Gracias!