The term aerotolerant anaerobe refers to an organism that a. does not use oxygen but tolerates it. b. is killed by oxygen. c. uses oxygen or grows without oxygen. d. requires less oxygen than is present in air. e. requires more oxygen than is present in air.

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

Which of the following is a true statement? question 8 options: populations can't evolve, only individual organisms. individuals have adaptations that can change over time. individuals have traits that may or may not make them successful at reproduction. individuals evolve to have adaptations.

The diagram below shows the layers of a rock having a trilobite: a rock column labeled rock is shown. the column has three layers. the bottommost layer of the rock has one shaded rhomboid shape, the middle layer has a rhombus with a diagonal along with two identical organisms marked as, trilobite, in the key, the top layer has two semicircles. a key is shown on the right side of the diagram. the shaded rhombus is marked as a, the rhombus with the diagonal is marked as b, the semicircle is marked as c which statement about the rock fossils is true?