Single celled organism are able to maintain homeostasis even though they lack level higher of organization such as organs and organs system

What was darwins theory of common decent

Which of the following explains why a tree is often used as a model to represent the principle of common descent

Which statement about relative potential energy of electrons is correct? a. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 2 s orbital of the second electron shell. b. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 3 p orbital of the third electron shell. c. an electron in the 3 p orbital of the third electron shell has more potential energy than an electron in the 2 p orbital of the second electron shell.