Factors that may trigger vasodilation or vasoconstriction include all of the following EXCEPT: (an explanation would help immensely if possible)

A- the metabolic rate determined by activity will influence the regulation of temperature
B - some substances such as alcohol and nicotine interfere with temperature regulating mechanisms
C- the chemical activity of the small intestine plays a major role in the temperature homeostasis
D - the brain, in response to a change in BP, influences temperature regulation directly

answer: tributaries flow into rivers.

wetland is a biome that develops when the water gets accumulated in a land exhibiting a huge depression. these form either seasonally or permanently. the water in the wetland comes from rivers, lakes, ocean, flood, rain or other sources. the wetlands includes mangroves, marshes and peatland.

tributaries flow into the rivers develops a wetland because such water will get deposited in the depression and will restrict the original flow of tributary water. hence, water with low drainage current combines with the river water.

b. read the phase at the intersection of any given temperature and pressure.