The immune system has evolved in multicellular organisms to defend against bacteria, viruses, and other foreign substances. As the first line of defense, immunity consists of physical, chemical, molecular, and cellular defenses and does not require prior exposure to an antigen. immunity is the second major immune defense and requires prior exposure to the antigen, which is then remembered and becomes antigen-specific.

The images show the wings of a bat and a bee. from this evidence, what can you conclude about the evolutionary relationship between these organisms? a. the wing structures of the bat and the bee are different, indicating they didn’t inherit wings from a common ancestor. b. the wing structures of the bat and the bee are different, indicating they inherited wings from a common ancestor. c. the functions of bat wings and bee wings are the same, indicating they obtained wings from a common ancestor. d. the functions of bat wings and bee wings are different, indicating they didn’t obtain wings from a common ancestor.

Moving down the ramp from 6 meters to

Which of the following graphs have the same wavelengths