Avariety of factors can affect the angle of repose, including:
a) larger, more angular particles form steeper slopes than smaller, rounder particles.
b) higher coefficients of friction result in steeper slopes.
c) in dry conditions, friction holds closely packed particles in place.
d) when small amounts of water are present, surface tension between the water and the particles increases cohesion and allows for steeper slopes.
e) however, large amounts of water reduce friction and allow particles to move downslope.
which factor might explain the variation in the angles you explored in the previous parts of the assignment?

the answer is a

Explanation:

im not sure if its right but i have a good feeling it is

a maximum–minimum thermometer. the scales are fahrenheit on the inside of the u and celsius on the outside. the current temperature is 23 degrees celsius, the maximum recorded is 25, and the minimum is 15, both read from the base of the small markers in each arm of the u tube. the bulbs are hidden by a plastic housing.

six's thermometer is a registering thermometer which can record the maximum and minimum temperatures reached over a period of time, for example 24 hours. it is used to record the extremes of temperature at a location, for instance in meteorology and horticulture. it was invented by a british scientist james six, born in canterbury, in 1780; [1] the same basic design remains in use.

it is also commonly known as a maximum–minimum, minimum–maximum, maxima–minima or minima–maxima thermometer, of which it is the earliest practical design.

the thermometer indicates the current temperature, and the highest and lowest temperatures since last reset.