Which partly explains why the domestication of animals tended to increase the human food supply?
question 9 options:

domesticated animals provided food and labor for cultivation.

domesticated animals were playful companions.

the fur, skin, and feathers of domesticated animals could be used for trade.

domesticated animals had to be fed as well.

Domesticated animals provided food and labor for cultivation and The fur, skin, and feathers of domesticated animals could be used for trade.

Explanation:

These animals helped people work before machines were around

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.

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.