How does the endocrine system affect the excretory system? A. It delivers messages from the nervous system to the excretory
system
B. It provides the enzymes that allow for digestion.
C. It adds oxygen to the bloodstream through diffusion.
D. It filters the blood that is used by the excretory system.

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.