What two chemicals must a plant acquire in order to complete photosynthesis?

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.

This is the interaction of two organisms where one is and the other is neither nor harmed.

Explain how the parts of the peripheral nervous system work with the central nervous system to produce a response to the stimulus