The image illustrates a building with a green roof – a roof that is covered in living vegetation. Green roofs help to solve one part of a complex problem. A
green roof increases the amount of carbon dioxide taken up in an urban area
and reduces the building's energy costs for heating and cooling.
Which problem are green roofs most likely helping to solve?
A. Urban worker safety
B. Environmental impact of paved surfaces
C. Reliability of power supply
O D. Public health issues

Study the diagram of a desert food chain . what would most likely happen if the kangaroo rats were killed off and removed from the food chain ?

The production of cells during mitosis into specialized function is recombination or differentiation

8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.