How many hours of darkness does the south pole receive on june 21

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this reaction?

In which of the following cases is work being done on an object? question 2 options: pushing against a locked door carrying a box down a corridor pulling a trailer up a hill suspending a heavy weight with a strong

Ineed the answer to question 1 , i’m desperate