Ions play an important role in many of your body's processes. two ions are pumped in opposite directions across the membrane building up a chemical and electrical gradient for each. these gradients can be used to drive other transport processes. what are these two important ions?

Choose one animal (cheetas) and research on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.

In 2001, records showed that local stocks of fish were down worldwide. yet, records of harvests indicated that fish were being taken at records rates. what was actually happening?

Color blindness is a recessive trait. the gene for color blindness is on the x chromosome. the family tree below shows the traits of color blindness. the only unknown is the father in the generation.