Hardness of rock (by using mohr's scale)
I believe you are referring to the organism's Phenotype,it's physical characteristics.
The distinguishing feature of a long-legged insect that makes it resemble a spider is its segmented body and eight legs, similar to a spider's physical characteristics.
no
The distinguishing feature of a brown spider with long front legs is its unique physical appearance, which includes a brown coloration and noticeably elongated front legs compared to its other legs.
The distinguishing feature of a spider with a black back is its dark-colored dorsal side.
The distinguishing feature of a plant with an unlobed leaf is that the leaf does not have any divisions or indentations along its edges.
A spider with a brown stripe on its back has a distinguishing feature that sets it apart from other spiders.
A sparrow with a white eye stripe has a distinguishing feature of a white stripe above its eye.
volcanoes
Black beetles with a brown stripe have a distinguishing feature of a noticeable stripe running across their bodies.
The distinguishing feature of a brown spider with a black head is the contrast between the brown body and the black head.
The distinguishing feature of a green caterpillar with a white stripe is the prominent white stripe running along its body.