Chemical weathering refers to the erosion or total disintegration of rocks that are caused by chemical reactions and not by mechanical processes. Usually water and other liquid substances causes this to occur. Skyscrapers or buildings are prone to chemical weathering because they are constantly exposed to precipitation and other elements in the atmosphere. In rocks, when this process happens they tend to crumble and form smaller rock pieces. It is important to note that during this stage, the end product is a totally different substance than its original phase.
I would assume that because of not only sports but because of what americans do, like eat alot or smoke etc. it can effect organ systems because the heart has veins leading to every other organ, when the heart stops, the organs stops too.
I believe the correct answer is the second option. Monocots and dicots are two groups of angiosperms. This group of plants are seed bearing plants. Flowers are their reproductive system where the ovules are being enclosed in the ovary. Angiosperms can be found in every habitat from grasslands and forests to deserts and sea margins. Angiospersms are divided to monocots and dicots. Monocot plants are characterized by having one cotyledon while dicots have two. Also, leaf veins of monocots are branched while that of dicots are parallel. The root system of monocots is a fibrous root system while dicots have a taproot system.
