consists of disimalar parts or elements, not homogeneous.
yes
Yes, it is a heterogeneous mixture, obtained from a edible alga.
I believe soil is heterogeneous...but not so sure.My gut is saying sand is a Heterogeneouse Mixture; But that's my gut.
It has more than one substance (banana, ice cream, syrup, nuts, etc.), and you can see the substances as distinct parts of the recipe, rather than all being blended together into a uniform substance.