What is 1550 dm expressed in hectometers? a.
1550000 hm
b.
155.0 hm
c.
15.50 hm
d.
1.55 hm

they both go up but then go back down. they both end lower than they started. lastly, they both are competitive/the second on.

explanation:

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above