What is the best definition of "thinking at the margin"? *
O
Deciding to use the entire piece of paper
O
Deciding whether or to do or use one additional unit of resource
O
Thinking about how to get the most work done
O
Thinking about how to get the most out of a resource

What natural processes produce large quantities of co2

Which best describes the present-day universe? opaque, expanding very slowly, stars produce heavy elements transparent, expanding at an accelerated rate, stars produce heavy elements opaque, expanding at an accelerated rate, stars produce only hydrogen and helium transparent, expanding very slowly, stars produce only hydrogen and helium

A155.0 9 piece of copper at 182 °c is dropped into 2500 g of water at 23.9 °c. (the specific heat of copper is 0.385 1/9°c.) calculate the final temperature of the mixture. (assume no heat loss to the surroundings.)