Answer:
It's an example of Demographic trends.
Explanation:
Demographic trend can be defined as the measurable change in the characteristics of a population over time e.g. Change in concentration of a particular ethnic group, age-group, occupation, religion, political view, sex ratio, etc.
Since the population in the U.S. is aging which means there will be an increased need for health care professionals in the future it indicates a demographic trend.
Answer:
U.S. agricultural exports to Mexico have quintupled since NAFTA entered into force, and the U.S. today supplies 75% of Mexico's agri-food imports. U.S. corn exports to Canada and Mexico have increased more than seven-fold since 1994. U.S. pork exports to Canada and Mexico have increased by 867% since NAFTA was signed.
Answer:
January 20, 1977 – January 20, 1981
I can try and help what is your question
Plants that get nutrients from rocks will can cause chemical weathering. Generally there are two types of weathering processes: physical and chemical weathering and they result in the breakdown of rocks, minerals, etc. Plants contribute to both physical and chemical weathering. Plants that grow in fissures and cracks in the rocks, as they grow their roots extend. Over time, the rocks will be broken into smaller fragments. Many such plants also give off chemicals, most commonly humic acid. These acids help in the breakdown of iron and aluminum compounds in the subsurface. Plants also support microbial life forms that help in weathering of soil and minerals. All these process contribute to the weathering of rocks and minerals.
I hope i helped. Also sorry if there were any typos.
