#bus_educational

The word "helixers" I hear for the first time, always said "spiders"

Between "class" and "type" there is an intermediate category - "subtype". A high school student does not need to know this. The class "spiders" (spiders, scorpions, ticks) is included in the subtype "helixers" (spiders, merostoms, sea spiders), which is included in the type "articular-footed". Main categories: life - domain - kingdom - type - class - order - family - species. Scientists use a lot of intermediate categories, such as "subcategory", "superfamily", subspecies" and so on. Google is "biological systematics"

A joke for teachers. The robbers caught the school teacher.
Give the clock!
I will not give you the clock, but take a good guide!