Which characteristic is one of the three main characteristics used to classify igneous rocks?

Texture

Explanation:  the rate at which the rock had cooled when molten magma was cooling gives out a clear comparrison of the rocks which is the texture

segmentation=endoskeleton=backbone=coelom=tissues

a

explanation:

many plants naturally reproduce this way, but it can also be induced artificially. horticulturalists have developed asexual propagation techniques that use vegetative plant parts to replicate plants. success rates and difficulty of propagation vary greatly. monocotyledons typically lack a vascular cambium and therefore are harder to propagate.