Sickle cell anemia is a genetic disorder obtained from a. exposure to large quantities of toxic chemicals b. a skin mutation caused by ultraviolet light c. inheriting a mutation in the dna sequence of a particular gene. d. exposure to a blood-related pathogen.

The oxidizing agent our bodies use to obtain energy from food is oxygen (from the air). if you breathe 15 times a minute (at rest), taking in and exhaling 0.5 l of air with each breath, what volume of air do you breathe each day? air is 21% oxygen by volume. what volume of oxygen do you breathe each day?

How does this experiment explain why it is often milder in areas such as coastal maryland while areas such as kansas or iowa have more extremes in temperature

Blank is a rock with a find dark texture that makes up the oceanic crust