In cities, the area in which rainwater can seep into the ground is reduced. water flows over roads, then the runoff is carried out to sea through drainage systems. how does the runoff from cities affect ocean systems?

a. ocean systems are damaged with the loss of sediments.

b. ocean systems are improved by receiving more water.

c. ocean systems are improved by the addition of nutrients.

d. ocean systems are damaged with more pollutants.

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.