Reflection and absorption by the atmosphere prevent some from reaching earth's surface.
a.
ozone
c.
nitrogen
b.
radiation
d.
oxygen

2pomis which of the following would be a valid hypothesis for a scientific investigation about how transportation affects food security? alcannotatiord foods purchased from the local farmers market. o b. how does the distance a food travels affect its affordability? o e foods that travel great distances cost less than foods bought o d why do local farmers markets have food with such high prices?