Antibodies are released into the bloodstream and attached themselves to foreign antigens such as toxins, bacteria and foreign cells. The attachment of an antibody to an antigen marks the pair for destruction.
This helps maintain homeostasis by providing the body protection against disease and infection.
Answer:
as a rule of thumb,older surfaces have been exposed to impacting bodies(meteorides, asteroid and comets) for a longer period of a time than younger surfaces.therefore older surfaces have more impacts craters.mercury and the moon are covered with impacts craters ;thier surface are very old.
Explanation:
complete na Po Yan
Answer:
Option (B).
Explanation:
Heart is the main pumping organ of the body. The human heart is divided into four chambers that are right atria, right ventricles, left atria and left ventricles.
The left and right ventricles can easily be distinguished on the basis of their thickness. The right ventricle is less thicker than left ventricle. The thickness of right ventricle is 9mm whereas the thickness of left ventricle is around 40mm.
Thus, the correct answer is option (B).
Answer:
algae and aquatic plants
Explanation:
results from accumulation of nutrients in lakes or other bodies of water
