Answer:
Phototropism
Explanation:
I believe this is the answer, as the tips are lighter and going in one direction. None of the other descripctions apply.
B) antigen, should be your answer
T cell, antibody, and histamine are all created by your body to help combat wounds or foreign substances
hope this helps
Answer:
The correct answer would be she has probably already had all the strains of colds and viruses in her office.
Previous exposures to the strains of colds and viruses helped Andrea to develop adaptive immunity in her body.
Adaptive immunity helps in developing the memory against specific pathogens and thus helps in providing long-lasting protection against recurrent infections.
For example, after vaccination against a specific pathogen, our body becomes immune against that particular pathogen.
To slow the process of bacteria growth
All require oxygen to live and are animals (this may not be the best answer)