Answer:
a
Explanation:
bace i have done thos test
Answer:
They are unicellular
Explanation:
All plants beside seaweed (algae) are multicellular; they are made up of more than one cell.
Seaweeds are unicellular; they are made up of only one cell.
I believe studying the hydrosphere would be most important because we haven't explored a good majority of it yet so we need to explore our waters before we explore space
