Biology
The non-vascular land plants are included in the group called

Tracheophyta
Bryophyta
Thallophyta
Pteridophyta

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Biology
A genus can best be defined as

A taxon comprised of classes
The most specific taxon
A taxon composed of one or more species and a classification level lying below family
A taxon composed of families

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Biology
One day you wake with a sore throat and a runny nose. Your doctor takes a swab from your throat, sends it to a lab, and telephones you the next day to say that antibiotic will not help you get better. Which of the following is the most likely reason for the doctor's statement?

Having waited a day, it is too late to take an antibiotic
You are infected by a virus
You need an antiseptic, not an antibiotic
You need to be vaccinated instead of taking an antibiotic

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