What microscope was cells first observed in

Based on the phylogenetic chart, which three statements are true about the relationship between the organisms? a human is more closely related to a mouse than a kangaroo. a platypus is more closely related to kangaroo than a mouse. a human and a kangaroo share common features because of a common ancestor. a platypus and a mouse are more closely related than a platypus and a kangaroo. a kangaroo and a mouse are more closely related than a mouse and a human.

When water freezes, it . contracts expands

What is any method of measuring the age of an object or event in years, such as using atomic half-life?