Which of the following circumstances could be a cause of a miscarriage? a. maternal hormone balance b. genetic normality c. maternal infection

Which of the following is not an example of conflict between related individuals?

What did the first language sound like

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