Highways allow people to travel between towns and cities. These highways also divide ecosystems into smaller pieces. Animals can become separated from lakes they use for breeding. For example, tiger salamanders travel long distances to breed at
lakes
How could highway systems affect animals such as the tiger salamander?
O
A. Tiger salamanders may be cut off from important resources
B. Tiger salamander habitats within ecosystems could become larger.
O
C. Tiger salamanders could improve their ability to remember roads.
o
D. Tiger salamander habitats may be exposed to less pollution

In a laboratory experiment, a fermenting aqueous solution of glucose and yeast produces carbon dioxide gas and ethanol. the solution was heated by burning natural gas in a bunsen burner to distill the ethanol that formed in the flask. during the distillation, the ethanol evaporated and then condensed in the receiving flask. the flame of the burner was kept too close to the bottom of the flask and some of the glucose decomposed into a black carbon deposit on the inside of the flask. during this experiment the following changes occurred. which of these changes involved a physical change and not a chemical change? check all that apply. 1-condensation of ethanol 2-evaporation of ethanol 3- formation of carbon dioxide gas from glucose burning of natural gas 4-formation of ethanol from glucose by yeast 5-formation of a carbon deposit inside the flask

What produces wave a)sound b) heats c)transfer of energy d)vibrations

Which terms are used to identify pure substances