Which elements are found in high proportion in earth's crust?

In which process is oxygen absorbed by an organism asap apex

Secondary pollutants are more harmful than primary pollutants. select the best answer from the choices provided ot of

Iguanas need to live in a habitat that is very warm, so the pet store warms their enclosures with "basking lights" which act as an artificial sun. describe how the three methods of thermal energy transfer may take place within the iguana's enclosure.