D. rift valleys.
Trenches occur at convergent oceanic plates; fossils are extremely old bones, bodies, or footprints, which have gotten so old the intervening years have turned them into rock; U-shaped valleys are valleys which are shaped like the letter U, and are usually formed by glaciers, which tend not to occur underwater very often.
Hot and dry. I am not very sure though.
Water is needed to start farms. they could also ship goods with the river. I know my answer is not well but I hoped it helped
<span>My responsibility in this activity within the community is to develop a new community or a new type of neighborhood with new responsibilities and aptitudes. I can face problems and setbacks due to criticisms and complaints that do not bring benefit to the work, however, I can meet positive and optimistic people. As the plan unfolds there are several steps that arise from the initial idea and project guidelines, the construction contains an elaborate and detailed plan and a schedule of activities for each worker. In these guidelines are marked the possible solutions to different types of problems found throughout the work. Transportation, labor, materials and especially the budget. For this there is a list of problem solvency codes and norms and guidelines established for each situation. The citizens of this community will be satisfied with the result.</span>
The correct answer is - A. Desertification is increasing, and the desert is expanding.
The Sahara desert has been expanding in the past decades, and it has started to overtake territory south of it. This is mainly due to climate changes, the precipitation has been decreasing, the temperatures have been rising, so the desert has slowly crippled into the territories that were once steppes and savannas. There is an organized action from the people that leave on the borderline of the desert, where they have been thought some techniques as to how to stop the desert growing, and they have gladly accepted it and work hard on it. Initially it seems that there are positive results, but for sure only the time will tell.
