PLEASE ANSWER: Precambrian time is much larger than the other eras of the geologic time scale. Earth’s water, oxygen, and first living organisms originated during this time period. Why do you think it is so much larger than the other eras of the geologic time scale?

This class has taught you that the use of science and medicine in practical ways has become an international endeavor. one of the greatest examples of an international science accomplishment is which allows the profiling of human dna, useful not only to science but also medicine. a) forensic science b) the fbi c) the human genome project d) bioterrorism

Vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a.) antibody, antibiotic b.) antigen, antibody c.)antibiotic, antibody d.)antibody, antigen

Due tonight 10 points will mark brain