What can cause extinction of a species?
a) quick adaption to change
b)adaption that do not overcome challenges of the environment
c)adaptions that overcome challenges of the environment
d)having behavioral adaptions

How can a geological time scale best be reconstructed? a) comparing vestigial structures in living species b) comparing homologous structures in living species c) examining homologous structures in fossil remains d) examining the written records of scientists from past cultures

Donde se encuentra el adn nuclear en un organismo eucariota?

The carbon cycle is best defined as a process in which a. carbon changes from inorganic forms to organic forms and back b. carbon is changed into other elements such as oxygen or nitrogen c. carbon is continually created from the sun’s energy by plants d. carbon is consumed and regenerated from other elements such as oxygen and nitrogen