Radiometric dating is dating a rock or mineral by measuring the proportions of an original radioactive material and its decay products. We need to know the rate at which radioactive decay occurs and <span>how much radioactive decay has occurred. Hope this answers the question. Have a nice day.</span>
Answer:
B. Looks at oceans as highways instead of barriers.
Explanation:
Answer:
Canadian Shield, Hudson Bay Lowlands, St. Lawrence Lowlands
Explanation:
Hudson has a very low population in the north, St lawrnece region has most the population in the south, and the most agriculture, the Canadian shield is heavy in natural resources like boreal forests and minerals, so large scale operations to extract these resources occur more there. Most people want to live in the city, further south where its warmer and you dont live next to clearcutting operations and coal mines.
Egypt is not one of the borders
There is mostly plains in the US