Pls !
atoms combine when
a. their electrons are shared or transferred
b. their outer electron shells are filled
c. the number of electrons and protons is the same
d. the number of protons and neutrons is the same

What type of competition exsist between two species. turtles and fish

Were does condensation occur? a) hydroshereb) lithosherec) boishered) atmosphere

Cladistics is a way of classifying organisms by examining the characteristics of their ancestors and descendants and depicting the relationships in a cladogram. which of the following best describes a challenge in classifying organisms this way? a. there are millions of species on earth, and a cladogram is not a practical means for classifying all of them. b. it is impossible to tell which organisms are most closely related to each other using a cladogram. c. cladograms are detail-oriented and do not provide a useful understanding of evolutionary relationships. d. there is a limited number of ways to organize the information, so most cladograms end up looking very similar.