Answer:
<em>It is a producer</em>
Step-by-step explanation:
The seagrass IS a producer and it produces energy for the manatee without taking away other animals because it has photosynthesis
I believe that the answer is C, I don't know if it is addition or multiplication, but if is is addition, it would be 146, C
1.3 billion divided by 3.56 is 36,516,853,932.6
I hope this helped! Have a great day!