Which characteristics describe the troposphere? Select two options.
Is the innermost layer
contains the ozone layer
has the highest air pressure
spans 12-50 km above earth
is a good place for planes to fly

Acquired mutations can result from radiation pollution toxins inheritence select all that apply

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

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes