Describe the observations that darwin made about the species on the galapagos

Why do the circulatory systems of land vertebrates have separate circuits to the lungs and to the rest of the body?

The smallest biological units that can evolve are

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?