A human red blood cell normally contains 2.0% salt. Which of the following salt solutions is hypotonic to red blood cells?
3.0%
1.0%
2.0%
4.0%

What is responsible for the uneven heating between the poles and the equator on any given day

What materials must dams have to produce electricity, and what must occur?

9. technology can bring both good and bad things. building a vertical farm can increase food supplies in cities (good), but it may cause unemployment in rural areas (bad). give another example of both the good and bad sides of a technological advancement (5 noints)