Isabella is explaining to her students that icebergs float on seawater. which property of seawater is isabella explaining?

a. density decreases as seawater cools
b. alkalinity of ice decreases, making it float on seawater
c. ice sinks in freshwater and floats on seawater
d. ice expands upon freezing, lowering its density

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