Jack has to pay tax to the government for his house. This type of tax is tax

What is a group of organisms that are closely related and share similar characteristics

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

What factors contribute to the effect an environmental toxin has on the human body?