Which type of ecosystem is found on less than 2% of the Earth’s surface?
a. freshwater ecosystem
b. terrestrial ecosystem
c. marine ecosystem
d. temperate ecosystem
a. freshwater ecosystem
You might also like to view...
RecA is not the only protein that can promote branch migration. One example is called RuvAB. RuvAB:
A. can promote branch migration but the process is very slow. B. contains two donut-shaped RuvA hexamers, related in structure to DnaB helicase, that have nuclease activity. C. cleaves the Holliday intermediate by replacing one RuvA with RuvC. D. can reload DnaB helicase to reprime DNA replication after repair. E. does not require ATP hydrolysis.
In acidic soils or in habitats subjected to prolonged acid rain, what element is often released from rocks that is toxic to many plants?
A. iron B. chlorine C. molybdenum D. selenium E. aluminum
Gases such as oxygen dissolve more readily in cool water than in warm water
Indicate whether the statement is true or false
In cocker spaniels, black coat color (B) is dominant
over red (b), and solid color (S) is dominant over spotted (s). In the F2 generation of a cross between BB ss with bb SS, what fraction of the offspring are expected to be black and spotted? a. 1/16 b. 9/16 c. 1/9 d. 3/16 e. 3/4