How has new technology related to hydroelectricity become more environmentally friendly in recent years? a- Increased precipitation prevents aquifers from running dry.
b-Waste is contained in a reservoir, preventing contamination of rivers and streams.
c- Diversions force water into a canal, providing new habitats for aquatic dwelling organisms.
d-Adverse impacts on fish and their habitats have been reduced with the introduction of fish ladders.

This part insulates the reaction chamber from the transfer of heat to or from the surrounding environment

Group control group #1 experimental group yes yes yes control group #2 no new drug orange juice bed rest no yes no yes ves which of the following is the best explanation of why a second control group was included in this experiment? o a. to provide the volunteers in the study with something to drink o b. to prove that the common cold cannot be cured c. to confuse anyone who is trying to steal their new drug and sell it as their own invention o d. to researchers conclude that results are related to the new drug and not to the orange juice submit e previous

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above