Refer to the article "Fire Up the Sun."
How does the text make a connection between an outside temperature of 85 degrees or more and the use of the solar-powered oven?
It suggests that cooking outside on hot days is more pleasurable than being in a hot kitchen.
It explains that the black paper is not effective on days when temperatures are below 85 degrees.
It indicates that on cooler days there are more shadows and solar energy is limited.
It explains that the hotter the air temperature, the better the food will cook in the solar oven.