Answer:
activate memory cells is lymphocytes
engulf and digest pathogens is phagocytes
and produce antibodies is lymphocytes
Explanation:
One of the challenges that scientists face when classifying a new fossil is that any tiny detail is all that separates one species from another. Further exploration is required to identify another set of characteristics that may help in deciding which organism belongs or create a new class.
Adenine and thymine
cytosine to guanine
hope that helped
