Describe the indifference curves associated with two goods that are perfect substitutes. the indifference curves for two goods that are perfect substitutes
a. have positive slopes.
b. are horizontal lines.
c. are convex.
d. intersect one another.
e. are downward-sloping straight lines.

Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter

What are the similarities & differences between a thermistor and a light dependent resistor in physics?

Marvin records scientific data about lake superior. for which property has marvin forgotten to use an si unit of measurement? shore length high temperature low temperature annual precipitation