Answer:
Antibodies
Explanation:
Specific immune responses are triggered by 'antigens'. Antigens are found on the surface of a pathogen and is used to identify a specific pathogen. Antigens trigger the immune system to release cells that attach themselves to Antigens in order to kill off pathogens. These cells attack Pathogens using <em>antibodies</em>
The green house effect makes it possible for life to exist on earth
White blood cells are cells found in blood that "fight" pathogens when they enter your body (when they manage to go trough your skin).
Answer: D. none of the above.
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Answer:
predator or a.pex predator
The penis is the genital organ
