Many emerging technologies, including that used in ever-improving cell phones, begin with the capture and analysis of speech. speech is a continuum of variances in acoustic pressure produced by the talker. in wireless technology, electronics inside a mobile telephone converts the waves produced by the talker to impulses on the transmitting side and on the receiving side it converts these impulses back to their original wave form. a) sound, analog b) sound, digital c) electromagnetic, analog d) electromagnetic, digital

Martha is writing a report on the landfill gases near her house. fill in the blanks to complete her report. use this table for calculations: residence time (t) mass (m) methane 8 years 4.3 × 1015 g landfill methane humans produce a huge amount of waste every day. landfills were designed to combat this large amount of waste by accumulating and disposing it. organic waste from landfills undergoes decomposition in the absence of oxygen, producing gases. methane gas is a large percentage of the gases emitted from landfills. if we consider a landfill a reservoir, the flow rate of methane is . methane has a longer residence time than co2, and it is a greenhouse gas that traps heat very effectively. therefore, methane the temperature of the reservoir.