Answer: Check for the presence of antibodies in the blood
Explanation:
A person can only have antibodies for a virus if they got the virus in the first place
your answer is B. because An animal must do three things to control body temperature. First, the animal must find a source of heat. Second, it must find a way to conserve heat when temperatures in the environment are too cold. Third, it must find a way to get rid of extra heat when temperatures in the environment are too hot.
Yes it does <span>- </span><span>Once dried, the substance is called lactucarium, or </span>lettuce opium<span>. ... A 1940 study found that fresh </span>lettuce<span> juice indeed </span>contains<span> two sedatives, lactucin and lactucopicrin. ... Why </span>does<span> steam rise from manholes in the U.S.</span>
Chordates
Chordates have the 4 unique characteristics, postanal tail, notorchord, pharyngeal gill slits and dorsal-hollow nerve cord. Lancelets is the group of chordates that has a notochord and includes separate males and females.
Lancelet exhibits the four basic characteristics of phylum Chordata. It has a dorsal nerve, a notochord, a post annul tail, and pharyngiall gill slit.
Jawless fish, cartilaginous fish, and bony fish have notochord when they were still young but it was replaced by a vertebral column as they mature.
<span>Lancelets are included in the subphylum cephalochordata. Cephalochordates are gonochoristics. It means that the sexes are separate. Both sperm and eggs cells are released in the water where fertilization occurs.</span>
