Hello! i need to know what other teo variables should have been controlled in this method! thank you

the answer is b: 1.4 km/hr

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg 

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high