If the equations have the same slope for example y=4x+2 AND y=4x+3 have the smae slope of 4/1, making them parallel but if the don't have the same slope for example y=2x+3 and y=4x+4 then they are not parallel
Answer:
The geography of ancient Greece determined and restricted its development to only certain areas, such as sea trade.
Explanation:
Ancient Greece, or rather the Hellenic city-states, are considered as one of the most developed civilizations of their time, though there can be made a solid case against it. Anyhow, in the early stages of the development of these city-states, they were very restricted in their development because of geographic factors.
The climate was of the Mediterranean type, which is a good climate, but problem was that the topography was rugged and mountainous, so agriculture was very limited to only a handful of crops and herding. Because all of the city-states had access to the sea, they focused on developing trade through it, with goods such as grapes, wine, olives, olives, and olive oil the most traded. They needed good wood for building ships, and they didn't really have any of that type. This made them heavily dependent on the Macedonians who had an abundance of wood, and considering that there was open hate between the two, it was not an ideal situation.
Answer:
D) the steady, clocklike decay of certain radioactive isotopes over time.
Explanation:
Geologists use radiometric dating to estimate how long ago rocks formed, and to infer the ages of fossils contained within those rocks.
For example, when rocks are formed, such as igneous rocks (formed when molten rocks cools), certain radioactive atoms are trapped inside the rocks during this formation process. Then these radioactive atoms decay over time.
The age of the rock can be estimated by comparing the occurring radioactive isotope within the material to the abundance of its decay products, which form at a known constant rate of decay.
From the options;
A) this is about the formation of the radioactive molecules and not about radiometric dating
B) this is radiocarbon dating (cabon dating/carbon-14 dating)
C) the <em>assumption </em>is wrong since the radioactive isotopes decays not accumulate.
D) the corect option as I explained earlier.
Answer: Mantle plumes, Continental rifts, island arcs, and Continental arcs
Explanation:
Mantle plume is the mechanism of convecting abnormally hot rocks within the Earth's mantle. The plume head partly melts on reaching shallow depths, the plume is often invoked as the cause of volcanic hotspots.
Continental rift refers to the belt of the continental lithosphere where the extensional deformation (rifting) is taking place. Continental rift zones have important consequences and geological features, and if the rifting is successful, leads to the formation of new ocean basins.
Island arcs are long chains of active volcanoes with intense seismic activity found along convergent tectonic plate boundaries. Most island arcs originate on oceanic crust and have resulted from the descent of the lithosphere into the mantle along the subduction zone. They are the principal way by which continental growth is achieved.
Continental arc is a type of volcanic arc occurring as an "arc-shape" topographic high region along a continental margin. The continental arc is formed where two tectonic plates meet, and where one plate has continental crust and the other plate has an oceanic crust along the line of plate convergence, and a subduction zone develops.
