multiple answers may apply Question 18 Rates of methanogenesis are lower in mari

ID: 38242 • Letter: M

Question

multiple answers may apply

Question 18

Rates of methanogenesis are lower in marine marshes than in freshwater wetlands because

sulfate is higher in seawater than in freshwater

Sulfate is lower in seawater than in freshwater

sulfate reduction yields more energy than methanotrophy

insects are methanotrophs

sulfide is more common in freshwater sediments

Question 19

Low-order streams differ from high-order streams in which ways?

low order streams are warmer than high order streams

low order streams have finer sediments than high order streams

low order streams have slower water velocities than high order streams

low order streams have steeper channels than high order streams

low order streams have less light than high order streams

Question 20

Seawater...

is denser than freshwater.

has more sulfate then freshwater

has less ions than freshwater.

freezes at lower temperature than freshwater.

usually contains more organic matter than freshwater.

sulfate is higher in seawater than in freshwater

Sulfate is lower in seawater than in freshwater

sulfate reduction yields more energy than methanotrophy

insects are methanotrophs

sulfide is more common in freshwater sediments

18.

A. sulfate is higher in seawater than in freshwater.

C. sulfate reduction yields more energy than methanotrophy

19.

B. low order streams have finer sediments than high order streams

D. low order streams have steeper channels than high order streams.

A. Is denser than freshwater

D. Freezes at lower temperature than freshwater.

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