Read the list of substances. air, copper, glass, gold, wood which substances have high electrical conductivity? air and copper air and glass copper and glass copper and gold

Consider the diagram below, which represents components of the biosphere. what do the two arrows in the diagram most likely represent? a. radiation b. photosynthesis c. cellular respiration d. energy conversions will give to anyone who answers quickly

Give the biological term for: structures that display characteristics of living organisms only within living cells

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important