The common cold, caused by a rhinovirus, affects the average adult ___ times per year. a: 2-4
b: 1-2
c: 4-7
d: 10-12

Which best describes how the common cold spreads in the human body? a bacteria burst out of normal cells killing them b viruses replicate inside respiratory cells c bacteria inject dna into normal cells d viruses insert dna into bacteria

Plz ! for many generations farmers in north america have been choosing to cross corn plants with large ears of corn each year this results in the new generation of plants also growing large ears of corn. what is the technique called? a. selective breeding. b. natural selection. c. mitosis. d. asexual budding.

When a doggo starts to pace around in the same line for a hand full of days. what would that mean?