Ques: You are presented with the question "An electrical conductor is required for the operation of:" and the following answer choices: - water current - electricity - satellites - energy - to move people - gas lamps - trains - lightning Now knowing that wiring requires an electrical conductor and wires connected to a source of electricity, choose the best answer.
Ans: electricity

Ques: You are presented with the question "What helps unicellular organisms move?" and the following answer choices: - evaporation - bacteria - heat energy - glucose - sweating - flagella - legs - blood Now knowing that flagella help prokaryotes move and most prokaryotes are unicellular, choose the best answer.
Ans: flagella

Ques: You are presented with the question "What lacks a centralized nervous system?" and the following answer choices: - Damaged hearing - Pesticides - Cats - insects - Sea urchins - barnacles - Humans - Fish Now knowing that echinoderms lack a centralized nervous system and starfish and sea urchins are also echinoderms, choose the best answer.
Ans: Sea urchins

Ques: You are presented with the question "Fossil fuels are burned in many what?" and the following answer choices: - roads - Fuel cells - solids - fossilized animals - power - engines - energy - Electrical Now knowing that using a gasoline engine requires burning gasoline and oil and gasoline are fossil fuels, choose the best answer.
Ans:
engines