Which of the following is an engineering solution? A) Writing a report that explains the effects of pollution on our food sources. B) Manufacturing a drill that can be used to drill for energy sources at the bottom of the ocean. C) Tracking temperature changes over the past century. D) Producing data to show the diet commonalities of diabetics.

Covalent network solids typically have melting points and boiling points. the chemical formula of a network solid indicates in the molecule.

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

The diagram below shows a cell placed in a solution.a cell is shown placed inside a beaker. it is labeled cell. the solution inside the beaker is labeled 40% salt solution and the solution inside the cell is labeled 20% salt solution.only water is allowed to move in and out of the cell. what will most likely happen to the cell? it will expand as water moves out of it. it will shrink as water moves out of it.it will expand as water moves into it. it will shrink as water moves into it.