Ques:You are presented with the question "What side of an insect are wings attached to?" and the following answer choices: - white - dorsal - protected - abdomen - elytra - three - strong - tail Now knowing that wings are part of the exoskeleton and attached to the thorax and insect wings are attached to the dorsal side of their thorax, choose the best answer.

Ans:dorsal
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Ques:You are presented with the question "what lack a centralized nervous system?" and the following answer choices: - barnacles - nervous fish - insects - bees - Pesticides - alpacas - fish - starfish Now knowing that echinoderms lack a centralized nervous system and echinoderms are represented by the starfish, choose the best answer.

Ans:starfish
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Ques:You are presented with the question "What results from plucking a string?" and the following answer choices: - light waves - sound waves - guitar - friction - chemical changes - kinetic energy - mechanical - violinist Now knowing that plucking a string can cause that string to vibrate and for example, sound is a wave of vibrating air, choose the best answer.

Ans:sound waves
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Ques:You are presented with the question "What is something people can survive only a few days without?" and the following answer choices: - Shelter - Food - O3 - NaCl - urea - H20 - H2O - Salt Now knowing that most people can survive only a few days without water and water is made up of H2O molecules, choose the best answer.

Ans:
H2O
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