The correct answer is option C
All the animals are Heterotrophs as they cannot perform photosynthesis.
Except some of the sponges, all the animals are heterotrophs as they cannot make their own food(photosynthesis).
Heterotrophs depends on autotrophs or some other organisms for their food.
They are dependent on other organisms for their energy needs.
When heat and pressure are added to sandstone it becomes metamorphic rock.
A molecule is made of more than one atom of differing elements that can be simplified while an element cannot be simplified because it is only one atom of one type of element.