Which class of molecules is responsible for speeding up chemical reactions?

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.

Plsss > .< compare and contrast the characteristics of flatworms rounds worms and earthworms

What is a group of organisms that are closely related and share similar characteristics