Some people think hydropower should be used to supply ali of the electricity for the united states. which of the following statements describes a flaw in this plan?

The answer is: C. Hydropower can harm native aquatic population.

Hydropower facilities can have a major impact on aquatic ecosystems.

Hydroelectric power have hydroelectric dams and the reservoir.

Hydroelectric dams and the reservoir obstruct fish migration and affect their populations.

Reservoirs have higher than normal amounts of sediments and nutrients, which can lead to excess of algae.

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.