How do scientists classify a vascular plant without seeds?

Consider the last statement in the prompt: "people take such environmental factors into account in their choices when deciding where to live." do all people have a choice as to where they live? what factor plays a key role in this decision and may therefore play a large role in determining quality of life?

Classify the structures as homologous or analogous, depending on their structure and function.

What controls activities within a eukaryotic cell?