It's not a food web it's a food chain. I just did the exam a few minutes ago. Please mark it Brainliest.
The density of this object would be 2. It would be two because to find density you have to do mass divided by volume. So 40g divided by 20 cubed cm = 2g/cm cubed
I would say A,B and D. The spectra allow for the determination of isotopic signatures of samples, the masses of particles and of molecules and thus the density, and most likely the energy levels of atoms. The energy given off by the elements allow these qualities and quantities to be determined.
I think the answer is the first choice
