Biology, 16.09.2019 04:30 kayleerichards666
"people in albany and new york city are using “green roofs” to improve the environment. a green roof can be added to many buildings that have large, flat roofs. green roofs have three parts: a protective layer to separate plant roots from the roof of the building, an absorptive layer to catch and hold rainwater, and a layer of plants. often, green roofs use sedum, a short, desert plant, because it is efficient at storing water in its leaves and can withstand the colder climate.
a green roof saves energy, reduces carbon dioxide in the atmosphere, and prevents rainwater and melting snow from overloading sewer systems. it can also protect the roof of a building from damage. however, green roofs can be expensive to install, and require care and maintenance.
state one disadvantage of a green roof."
Answers: 1
Biology, 21.06.2019 17:20
Groups of organisms with low biotic potential, such as gray whales, that produce at most one offspring every other year a) are r-selected b) are k-selected c) are not subject to density-dependent limiting factors d) show the initial stages of the extinction process e) have escaped from the processes of natural selection and adaptation
Answers: 2
Biology, 22.06.2019 06:50
Drag the tiles to the correct boxes to complete the pairs. match the nitrogenous base of dna with its complement.
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Biology, 22.06.2019 17:00
Label all the places where dna is located in the plant cell and in the animal cell. dna
Answers: 1
Biology, 22.06.2019 21:00
Brass gets discoloured in air because of the presence of which of the following gases in air? a. oxygen b. hydrogen sulphide c. carbon dioxide d. nitrogen
Answers: 2
"people in albany and new york city are using “green roofs” to improve the environment. a green roof...
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