It is often argued that viruses are not living. why?
a. viruses reproduce.
b. viruses are not made of cells.
c. viruses contain genetic material.
d. viruses are made of rna or dna.

The bacteria found in soil is usually harmful and measures are taken to remove any traces of microorganisms. true or false

Which type of respiration takes place when there is no oxygen present

Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.