Which evidence below supports the theory that mitochondria and chloroplasts were originally bacteria?
a) circular dna is present in both organelles.
b) both organelles are larger than other organelles in the cell.
c) both organelles are surrounded by a single lipid bilayer.
d) all of the above.

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?