Which system destroys and removes harmful organisms? a. endocrine system b. excretory system c. lymphatic system d. reproductive system

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere

Which soil would most likely be found in the arctic? andisols gelisols histosols spodosols

9. what area of study applies scientific findings to create ways for solving problems or improving life? a biogeology b mathematics c manufacturing d engineering