Which of the following is an example of specific immunity? Coughing expels foreign materials from the body.
OT-Lymphocytes recognize, attack, and destroy a pathogen.
Phagocytes engulf and destroy microbes.
The skin blocks the entrance of pathogens.

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.

if, i suppose that a bee stings me swinging my hand away from a bee. then that if, i persist patient when a bee or wasp areas on your surface to investigate a scent or to take h2o and i secreting heavily, the bug ultimately will move of its personal agreement. if i don't need to set for it to disappear, lightly and gently wipe it off with a part of the paper.