Based on his observation that contact between neighboring tribes had existed since humanity's beginnings and covered enormous areas, Franz Boas argued that

a. language must have originated among the Neandertals.
b. cultures should not be treated as isolated phenomena.
c. biology, not culture, was responsible for the vast majority of human diversity.
e. general anthropologists were wrong to focus too much attention on biology.
f. the earliest foragers engaged in warfare.

from my research i have to the conclusion that decomposers, such as fungi, bacteria and invertebrates, play a critical role in nutrient cycling and without them the earth's ecosystem may not support life as we know it. elements such as carbon, nitrogen and phosphorus exist in limited amounts on earth, although huge amounts of carbon are being released into the atmosphere from underground sources now by humans. it is still extremely important that other nutrients be retained by the process of re-use. decomposers are organisms that are able to chemically break down dead material and make these elements available for use by other organisms. without this breakdown of dead material, dead bodies would pile up. so decomposers also play a role in clean up also. without them, life might not continue as we know it and dead material would overwhelm the earth.    

well first you need the sample of the temperature and gas level. i couldnt write a hypothesis unless i had some data. i think temperature changes will effect volumes of gas because gas changed into a solid or liquid at specific temperatures.

food source and hunting?

answer///unconditioned stimulus;