Which sedimentary rock has the coarsest grain?

limestone

sandstone

shale

flint

How does secondary succession differ from primary succession?

The function of the excretory system is to control homeostasis and

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.