Which of the following is not an amphibian adaptation to life on land?
a. three-chambered heart
b. lungs
c. four legs
d. endothermy

Dna and rna share a number of similarities,but they also differ in certain aspects of their structure. wich nitrogenous base is found in rna but is not found in dna

The scales shown in the introduction measure mass, or the amount of matter in a particular object. the scientific law of conservation of mass states that matter cannot be created or destroyed during a chemical reaction, but it can change from one form to another. did the simulation support this scientific law? explain why or why not.

Can nonrenewable resources be used sustainably?