A plate moves south at a rate of 2 cm/year. How many meters south from its original location will the plate be in 4,000 years? 8,000 meters south 4,000 meters south 200 meters south 80 meters southWhich source of evidence did Wegener use to support his theory of continental drift? fossils magnetic fields satellite mapping warm equatorial climates

1. 8000 meters

2. Fossils

Explanation:

1. Rate of southern movement of the plate = 2 cm/year.

In 4000 years, the plate will move a distance of 4000 years * 2 cm/year = 8000 meters

Therefore, the plate will move a distance of 8000 meters south in 4000 years.

2. Wegener in supporting his theory of continental drift used fossils, geologic and glacial evidences. He compared the fossils found in different continents and argued that the presence of fossils of certain animal fossils such as the Lystrosaurus which are found in antarctica, India and South Africa indicates that the continents drifted apart as the Lystrosaurus could not have swam across the ocean to get to these different continents. Also, using geologic evidence by comparing rock structures on opposite sides of the Atlantic ocean, he determined that there were similarities between the rock strata of the Karroo system of South africa with the Santa Carina system in Brazil.

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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satellites are frequently used to make observations of the orbit on earth