An important measure of whether an activity is sustainable is the amount of carbon dioxide emitted by the activity, also called what?

A. Its carbon footprint

B. Its renewability

C. Its energy usage

D. Its design iteration

In iceland, the mid atlantic ridge runs through the center of the contry. what can you conclude about the apperence of iceland many thousands of years from now?

The transport tubes from food came down the plant are called?

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.