(404) 604-4780

60 points

………

Astudent creates a model of a closed ecosystem by filling a glass tank half full with water, then adding 10 snails and two small aquatic plants. the next day, all the snails are dead. what is the most likely cause of their death?

Arrange the images in order to show how lake-effect snow occurs.

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2