Tony, who works in a pesticide factory, comes to the clinic complaining of muscle spasms that interfere with his movement and breathing. a blood test shows that he has been contaminated with organophosphate pesticide, which is an acetylcholinesterase inhibitor. explain the reason for his involuntary muscle spasms. explain why he is experiencing difficulty in breathing.

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.