The buildup of lactate in the muscles makes the muscle cells more acidic. This acidity makes the muscle worse at breaking down glucose, leading to weakness in the muscle. In what way do you think this process helps to prevent the overexertion of an organism?

This process keeps the body from using up all  its energy.

Explanation:

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volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. these particles serve as nuclei for the formation of water droplets (hydrosphere). rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere).

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.