Observations can lead to hypotheses that can lead to new experimentation. which best describes an observation and hypothesis that could lead to new experimentation? dr. cooper invents a machine that allows him to see atoms inside of matter with more detail. while studying an atom, he thinks he starts to see a pattern in its movement even though current theory states that atoms move in random motion. dr. gupta is studying electron attraction by watching how two electrons are drawn towards each other by gravity. he then finds that they push away from each other when they both have a negative charge. dr. snyder finished her investigation on particle physics. she concludes that there are eighteen types of elementary particles. dr. abdallah is writing a paper on the theory of evolution. to do so, she interviews several evolutionary scientists.

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.

americans began to notice growing differences between the northern and southern sections of the country. there were more people living in cities in the north, which made it more urban. more people lived on farms in the south, which made it more rural. while many people were farmers in the northern states, there were now other ways to make a living, such as working in mechanical cotton gins factories manufacturing cloth, tools and other goods. people in the north supported high tariffs on goods imported from europe because the extra cost encouraged people to “buy american” instead. in the southern states, planters did not like tariffs because they sold most of their production to europe and bought their tools from there as well. southerners believed the protective tariff was something that only northern factory owners keep their profits high. so the southern politicians came up with an idea. they would opt out. they would simply ignore the protective tariff. it was ‘null and void’ in south carolina. the state would not collect the taxes on goods imported into south carolina, no matter what the president said they had to do. this decision led to the nullification crisis.