Help me with my study guide for tmr please !!!

Which traits do human embryos have that link them to a common ancestor with fish and reptiles? a. scales and tail b. gill slits and scales c. tail and gill slits d. hair and tail

Brainliesttt me asap! the below reaction can be categorized as more than one type of reaction. which reactions are these, and what are the types of reactions?

Electrons are extremely important to what area of technology? a) anti-aging research b) household product development c) electronics d) drug discovery