For infectious disease to occur, the host must be A) either ...

[viki]

For infectious disease to occur, the host must be
 
  A) either very young or very old.
  B) vulnerable.
  C) immunocompromised.
  D) in direct contact with the pathogen.

Question 2

At puberty, males develop secondary sex characteristics that include facial and body hair, larger skeleton, and
 
  A) an increase in fat tissue.
  B) widening of the hip bones.
  C) deepening of the voice.
  D) reduced musculature.

[sultana.d]

Answer to Question 1

B

Answer to Question 2

C

[viki]

TYSM

[alexanderhamilton]

Gracias!