Achild who is being evaluated for an immune deficiency fails to make antibody to tetanus toxoid or pneumococcal vaccine, but shows normal cell-mediated immunity as indicated by a positive skin test (swelling and redness) to a commonly encountered environmental antigen. this child has an abnormality of which cell lineage? think in: cellular immunity vs humoral immunity

My question says on my assignment. read the following scenarios and decide which of the properties of life are being described. the first one is. katherine stopped on the way to school to grab some donuts. 2. because a dog cannot sweat, it has to pant in order to stay cool. 3. an elephant trun had no bone but 4,000 muscles. i have no idea what i am supposed to anwer. i can't find the answer in my notes or book that i can understand anyway

Will mark branliest. the theory of plate tectonics was developed with the contribution of scientists from many different disciplines. which of the following is a contribution from geophysicists?

Which of the following statements about protists are true? a.they are typically found in moist environments. b.they are all unicellular. c.they have a nucleus. d.they are all multicellular.