Calculate the change internal energy (δe) for a system that is giving off 65. 0 kj of heat and is performing 855 j of work on the surroundings.

Ppcc assigned a story board on eg.ppcc.edu about a post-apocalyptic world called the books of wisdom. i was wondering if anyone had any advice on how to do well. also is there a way to change you name?

The solutions to the inequality y ≤ 2x − 4 are shaded on the graph. which point is a solution? p

In this food web, which group would increase in number if snakes were eliminated? a. producers b. decomposers c. primary consumers d. secondary consumers e. tertiary consumers