Which factor does not effect the speed of a seismic wave? temperature, chemistry of the rock, season of the year, or pressure​

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands

the cost of mining is extremely low compared to the money earned from mining, creating income to improve the environment.

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.