Cell division in the vascular cambium adds to the girth of a tree by adding new to the layer's interior and to the layer's exterior.

Cattle with brown fur and cattle with white fur will produce a reddish roan calf . when examined closely, the calf show about an even number of brown hairs and white hairs that give a reddish appearance when viewed from far away. the fact that both the brown fur allele and the white fur allele are expressed equally in the offspring is an example of

Why are plants found at the beginning of a food web

If the type of food available changes, then…