Population and nutrients, This is because if you have a large population then you must need a certain amount of nutrients to suit the population
I'll say that it is +1 since hydrogen is desperate to lose an electron to fulfill the octave rule (that the molecules want to gain 8 electrons and if they can't do it, they want to lose all their electron). Electron is - so if it lose a electron, it becomes +.
Hopefully this helps.
PS. I'm not certain of my answer but it is logical.
im not sure if this is what the class is considerd but i know that it avians,aka birds
Answer:
Non-engineered/owner-build structures are more vulnerable because they can be poorly built. Without proper knowledge to build the right structure, the structure is more at risk of abnormalities or destruction from hazards such as rain, hail, strong winds, and debris.
Amino acids are generally soluble in water, meaning that they do dissolve in water.