How/why does this brown, clumpy mixture come out of your bottom?

because when you eat the food your insides blend it up real good, similar to how a blender blends food; only difference is that the food doesn't come back out where it came from- it comes out of another hole, aka your bottom hole.

hope this !

the food storage products of chrysophytes are oils or the polysaccharide laminarin.   formerly classified as plants, the chrysophytes contain the photosynthetic pigments chlorophyll a and c all but the yellow-green algae also contain the carotenoid pigment fucoxanthin.

if you know your abc's you should be able to get your answer or just use google