Take a look at 2 organisms in the open ocean. What zone do they live in, then make a food chain with the 2 organisms. Label the organisms and use arrows to state which way the food chains go.

What produces a record of seismic waves? richter scale seismogram barometer seismograph

Acoal-fired plant generates 600 mw of electric power. the plant uses 4.8 x 10^6 kg of coal each day, and the heat of combustion of coal is 3.3x 10^7 j/kg. the steam that drives the turbines is at a temperature of 300° c, and the exhaust water is at 37° c. (a) what is the overall efficiency of the plant for generating electric power? (b) how much thermal energy is exhausted each day? (c) what is the change in entropy of the universe for this heat engine? (d) using the same heat reservoirs, what is the maximum possible (carnot) efficiency for a heat engine?

The softest and hardest minerals are: softest hardest