Question

Public debate around climate change and its effects on agriculture tends to focus on the
large-scale industrial farms of the North. Farmers who work on a small scale and use
traditional methods have largely been ignored. However, as the world slowly comes to
terms with the threat of climate change, Native farming traditions will warrant greater
attention. In the industrial model of agriculture, one or two crop varieties are grown over
vast areas. Instead of trying to use local resources of soil and water optimally and
sustainably, the natural environment is all but ignored and uniform growing conditions are
fabricated through large-scale irrigation and the intensive use of artificial fertilizers and
pesticides. For example, a handful of basically similar potato varieties, all of which require
nearly identical soil conditions, temperature, rainfall, and growing seasons, account for
almost all global production. When these global crops are no longer suited to the
environment in which they are grown, when their resistance to disease and pests begins to
fail, or the climate itself changes, the best way to rejuvenate the breeding stock will be to
introduce new genetic material from the vast diversity of crop varieties still maintained by
indigenous peoples. In contrast to the industrial model, Andean potatoes and other Andean​

Answer 1

Answer:

David average speed driving for 5 hr was 55km /h during his first two hours of journey he drove at 60km/h and the last two hours he drove at 50 km/h what was his speed for the fifth hour of the journey

( step by step method)