00:01
All right, we are talking about biomass.
00:04
So we are told that biomass is a measurement in terms of grams of dry mass per unit area.
00:13
So it's kind of like a concentration, really.
00:17
However, the question asks, what is the mass of oak trees in pyramid x of model 3? so we want to be careful.
00:29
And i'm not exactly sure what your particular team.
00:33
Had in mind for this, whether they meant, well, what is the concentration of oak trees as defined there in the pyramid? in which case, it would simply, let me switch to black ink, it would simply be the 11 ,000 grams per square meter, gram per meter squared.
00:58
But again that's a concentration of mass per area not a just a gross mass so you might want to clarify that before you turn this in but that would be the answer based on what is given in the in the graphic part b asks what is or i'm sorry that was question 19 19 20 so question 20 then asks, what is the mass of phytoplankton in pyramid y of model 3? so again, we aren't told what area we are looking at, so we can't just give a fixed number of grams, but based on the information that we are given, i suspect that the question is actually asking, what is the mass per grams of phytoplankton in pyramid y of model 3? and the answer there would be 40 grams per square meter.
01:59
40 grams per meter squared.
02:05
And let's see.
02:06
And then 21, there we go, 21 says, let's see, what is the trend that we see moving up pyramid x? well, we see a lot of mass, and then slightly less, slightly less than that, and then a very small amount of mass at the top...