Researchers wanted to determine if pesticide X was effective…

Researchers wanted to determine if pesticide X was effective at killing grasshoppers that typically invade cornfields. Two ten-acre cornfields located 1 mile apart were chosen. The cornfield to the west was sprayed only with water. The cornfield on the east received the same amount of water with a 10% solution of pesticide X. Grasshopper abundance was measured in the fields every week for 10 weeks.  The results were: West field – the number of grasshoppers doubled East field – the number of grasshoppers declined by 50% Which field was the control group?

Driving along a highway, you start noticing a few columbine…

Driving along a highway, you start noticing a few columbine plants with intense blue flowers. Several miles later, these flowers are super abundant. Then further along, the columbine flowers become less abundant and eventually disappear. The regions with just a few of these plants probably represented the columbine’s ___.