Which of the following expected to have the highest value (gm/m²/yr) in a grassland ecosystem a) Secondary production
b) Tertiary production
c) Gross production
d) Net production​

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

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 

the cost of mining is extremely low compared to the money earned from mining, creating income to improve the environment.

answer///unconditioned stimulus;