Fill in the Blank Similarities in the early development of chickens and opossums suggest that these organisms share a .

Witch theory suggests all living things are made up of cell or cells

Each member of a class sampled a piece of ptc testing paper. thirty people sampled the chemical. twenty persons were tasters. how many had heterozygous genes? 10 20 0-20 indeterminate

What happens to the amount of waste in the pond as the ecosystem ages?