Levi is conducting a comparative experiment where he is comparing the average temperature in cities and nearby rural areas. he finds that cities are on average one degree warmer than rural areas. what is a major limitation of his experiment? a) large amounts of information can be gathered. b) it is repeatable. c) he can not definitively show what causes the difference. d) there is an independent variable and a dependent variable.

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

What does the xylem do? stores the glucose captures the sunlight absorbs oxygen into the leaf carries water from the roots to the leaves

How much heat is added if 0.814g of water increase in temperature by 0.351 degree c?