I believe the answer is 60.
<span>The half-life of carbon-14 is so short that it can be used only to date materials that are less than 70,000 years old</span>
Answer:
Agriculture is the main source of food, income, and employment of our country. ... Agriculture has been the highest priority because economic growth was dependent on both increasing the productivity of existing crops and diversifying the agricultural base for use as industrial inputs.
OR
Modern agriculture is an evolving approach with innovations in farming practices that helps in increasing agricultural efficiency and reduce the loss of natural resources. By applying this modern technology, farmers are gaining more profits and able to increase their productivity of field.
Some of the modern techniques like selected variety of hybrid seeds of a single crop; bio-fertilizers and bio-pesticides; technologically advanced equipment and energy subsidies in the form of irrigation water are commonly employed by the farmers. The sensors used to detect moisture in the soil help farmers to create irrigation systems for crops based on soil moisture and temperature. Working in low visibility field conditions like rain,dust and fog is possible with the help of modern technologies. Agricultural robots automate agricultural processes of fruit picking, crop harvesting, soil maintenance, irrigation, ploughing, planting, weeding and others. These robots automate slow and repetitive tasks for farmers to ensure focus on improving overall production yields. Land-augmenting technological changes involve technical, chemical and biological modifications to beintroduced in agriculture.
Answer:
By looking at the map we can infer that A) Manufacturing was a key part of the economy in the Northeast.
Explanation:
Most of the technology was brought over from England and as people started to settle they started to work with cotton and manufacturing textiles. It is true that being close to a body of water made it easier not only to transport the goods but also the machinery needed. However, Illinois and Indiana have Lake Michigan as a primary body of water. We know that textiles were a big part of the economy since very early on and so were cotton fields, were they would extract the necessary material to them manufacture the textiles needed.
