What do all mammals have in common that distinguishes them from birds?
A B C D
eyes fur a brain a heart
Question: What do all mammals have in common that distinguishes them from birds?
(A) eyes
(B) fur
(C) a brain
(D) a heart

Answer: (B) fur
Answer: (D) a heart
Question: What do all mammals have in common that distinguishes them from birds?
(A) eyes
(B) fur
(C) a brain
(D) a heart
Answer: (B) fur