Calories written on food labels are used to measure the A. energy content in foods
B. mass of a food serving
C. nutritional value of foods
D. weight of a food serving

some of your causes might be acidic rain or natural wildfires that cause the parks to be degraded

hope this any more questions i am here plz mark brainliest

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.