D Bc I just did it and got it right
A- Flatworms are unsegmented and only have one mouth/anus opening. And they are obviously flat
-3x + 3(2x - 6) = 6
-3x +6x - 18 = 6
3x - 18 = 6
3x = 6 + 18
3x = 24
x = 8
hope this helped, blessing! :)
That would be the synthesis of body mass in a primary consumer (herbivore who eats the plant).
Although at first it may seem like an antigen, it's a pathogen.
