Some pathogens are naturally present

a) food and soil

b) food and minerals

c) soul and viruses

d) air and minerals

The 1.5 mile run test and the 12 minute swim test are considered as what kind of test ?

What is psychological dimensions? (meaning)

Which of the following represents a difference between viruses and viroids? a) viruses infect many types of cells, whereas viroids infect only prokaryotic cells.b) viruses have capsids composed of protein, whereas viroids have no capsids.c) viruses have genomes composed of rna, whereas viroids have genomes composed of dna.d) viruses cannot pass through plasmodesmata, whereas viroids can.