Hay or kitty litter would probably work.
your moms boobs
Darker materials tend to absorb solar heat, while lighter materials reflect it.
uranium
I'm doing a science project on how to absorb oil and this is what i got You could use cotton balls or some old t-shirt, thick paper towel...ect.
plastic
metal
no
Sodium chloride is hygroscopic, absorb water.
the sun
Opaque
metal mesh
The surface area can be increased so that it can absorb more materials. The microvilli protrude from the epithelial cells lining.