The book describes a process of total energy in which energy consumption is broken down into user types, then added together to make a total. how is the idea of net energy represented? a) it represents the total energy used per household minus the total amount paid to the power company. b) it represents the energy that can be cogenerated at power plants when waste heat is collected and used. c) it equates to measuring energy efficiency, where the energy required at each step and conversion is taken into account. d) it is equivalent to the energy that can be captured by grated tidal turbines.

Charles darwin published his theory of evolution in 1859. in what way foes modern evolutionary theory differ from the theory as proposed by darwin? a) darwin inferred that individuals can evolve, but modern generic science has shown that this is not true. b)darwin inferred that individuals do not evolve, but modern genetic science has shown that this is not true. c)modern science has disproved most of darwin's original theory of evolution, because darwin knew nothing about generations and their role in heredity. d)generic studies have shown that gene expression and other factors operate along with natural selection, but most of darwin's theory has been supported by modern science.

What is the importantence of the carbon and nitretan cycles in the environment

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays