C. Unferth is jealous because the woman he loves want's Beowulf and not him.
If you take a look in the book you can very clearly tell that Unferth is jealous of Beowulf and twists the stories to make it sound like Beowulf isn't very heroic and things of that manner.
Photosynthesis produces oxygen and glucose mainly. The oxygen gets released into the air, because oxygen to plants is like carbon dioxide to us. It doesnt harm them, but they cant use it. The glucose ends up either being used by the plant or stored somewhere within the plant to be used later.
We are to convert the temperature that Jessica was able to read on a cool autumn day from °C to °F. To solve this, we need to recall the formula in converting temperature from °C to °F and this is shown below:
F = (9/5)C + 32, Jessica reads 18°C and substitute this to C in the formula such as:
F = (9/5)18 + 32
F = 32.4 + 32 , perform addition of 32.4 and 32
F = 62.4 °F
The answer is 62.4 °F.