A student is investigating thermal energy transfer. The student places two copper blocks, Block 1 at
40°C and the Block 2 at 20°C, next to each other
so they make contact. They are allowed to sit in
an isolated system until energy transfer has
completed. Which picture shows the final
temperatures of the blocks?
50
20
30
30
70
70
20
50

What is being converted during photosynthesis

African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.

Isolated volcanic peaks on the ocean floor are