One study examined 1,000 youths in philadelphia and found that high levels of what in the body was associated with higher crime rates?
a. lead
b. pesticides
c. allergens
d. red blood cells

Always use significant figure rules. remember that these rules apply to all numbers that are measurements. if a vector that is 3 cm long represents 30 km/h, what velocity does a 5 cm long vector which is drawn using the same scale represent? a.100 km/h b.60km/h c.50km/h

Four types of motile cells in human body?

Describe how a non-resistant staphylococcus aureus bacterium can produce a bacterium that is resistant to methicillin