Which of the following does  notaccurately describe movement within plants?                 a.  movement of sugars within the xylem results from changes in concentration of water.  b.  changes in the concentration of nutrients affect the cause of movement of fluid through phloem. c.  cohesion and adhesion contribute to capillary action, which contributes to water movement. d.  transpiration is the only force that drives water movement within a plant. 

Sediment layers stop lateral spreading when: they encounter a barrier they encounter an opposing current they run out of additional sedimentary material

The carrier molecules of the electron transport system are located in the

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.