Which organisms externally digest dead organic matter and then absorb the nutrients? a. autotrophs b. detritivores c. heterotrophs d. saprotrophs (total 1 mark) 2. what are the two components of an ecosystem? a. community and abiotic environment b. species and habitat c. habitat and abiotic environment d. species and community?

protocol for imps extraction focusing on membrane protein extraction, solubilisation, and purification.

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.

the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.