How does a seismograph record seismic waves?

Click the item in the left column. use the plus sign to move it up or the minus sign to move it down until it matches the correct entry in the right column. lock your answer in place by clicking the square beside the item. (a checkmark means it is locked.) amazon basin a atacama desert b andes mountains c lake titicaca d peru e patagonia f brazil g chile h suriname

Which of the following is a way that advancements in technology improve humans' ability to measure air quality and protect human health?

In the figure, polygon abcd is transformed to create polygon a′b′c′d′. this transformation is a by a factor of .