Why might so many different organisms develop different traits but continue to have similar stages of early embryo development?

Sweating and breathing is an example of differentiation specialization maintaining homeostasis metabolism

Which of the following can be reduced by the use of renewable energy sources? a. social costs b. economic costs c. environmental costs d. all of the above select the best answer from the choices provided a b c d

Which are characteristics of flukes? check all that apply. a they are free living. b they are a type of flatworm. c they reproduce sexually. d they have eyespots. e they are segmented.