Chou is curious about the effect of magnets on how plants grow. he sets up 10 pot with alfalfa sprouts. he places strong magnets under five of the pots but does not put magnets under the other five pots. this is an example of which scientific practice a. collecting data b. providing explanations c. communicating results d. performing and investigation

D. Performing and investigation

Explanation:

A scientific practice involves the process of collection of data, performing the experiment and conducting the investigation, communicating results and providing explanation for the results.

The given situation is the example of the performing and investigation as it involves the detail experimental process which is the part of the scientific practice.     

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.