Human activities, particularly the combustion of are altering the climate by increasing co2 in the atmosphere.
a) fossil fuels b) hydrogen fuel c) nuclear fuels d) alternative fuels

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.

the potatoes have high sugar concentrations and although these potatoes were different we could seethe effects that their sugar concentrations had in different environments. for example, the potatoes in sample a, were placed in pure water. this created a hypertonic environment and caused the potatoes to draw in water from its surroundings. we saw the opposite happen with the potatoes in sample b when placed in the sodium chloride solution. the potatoes in this case were in a hypotonic solution and therefore lost water to their surroundings.