Which of the following is an accurate statement about ecosystems? A) There is a continuous process by which energy is lost as heat, and chemical
elements leave the ecosystem through runoff.

B) Energy is recycled through the trophic structure.
C) Chemicals are recycled between the biotic and abiotic sectors, whereas energy
makes a one-way trip through the food web and is eventually dissipated as heat.
D)A food web shows that all trophic levels may feed off each other.
E) Energy is usually captured from sunlight by primary producers, passed to secondary consumers in the form of organic compounds and lost to detrivoresIn in the form of heat.

Here's one way to follow the scientific method. place the missing steps in the correct position in the process.

To answer this question, researchers studied populations of the dusky salamander (desmognathus ochrophaeus) living on different mountain ranges in the southern appalachian mountains. the researchers tested the reproductive isolation of pairs of salamander populations by leaving one male and one female together and later checking the females for the presence of sperm. four mating combinations were tested for each pair of populations (a and b)—two within the same population (female a with male a and female b with male b) and two between populations (female a with male b and female b with male a). the proportion of successful matings for each mating combination was measured. for example, when all the matings of a particular combination were successful, the researchers gave it a value of 1; when none of the matings were successful, they gave it a value of 0. then the researchers calculated an index of reproductive isolation that ranged from 0 (no isolation) to 2 (full isolation). the reproductive isolation value for two populations is the sum of the proportion of successful matings of each type within populations (aa + bb) minus the sum of the proportion of successful matings of each type between populations (ab + ba). the table provides data for the geographic distances and reproductive isolation values for 27 pairs of dusky salamander populations.

Whats one way that rocks do not follow the typical rock cycle pathway?