Brody studied the geologic time scale and became interested in the sorts of life that existed in each era. He learned that scientists dated life in this era using the law of superposition and radioactive dating. Which of the following characterizes the Cambrian
period? Choose the three that apply.
A. all life lived in the sea
B. invertebrates developed
C. single-celled life
O
D. dinosaurs flourished
E. organisms with shells and outer skeletons developed

What will a hypothesis become if supported by repeated expermentation

Which term is applied to a scientist who studies ancient life, including animal and plant fossils? a- paleontologist b- geophysicist c- dendroclimatologist d - anthropologist

Amembrane protein is made and inserted into the membrane of the rough endoplasmic reticulum. a binding site that is present in this protein is aligned so that it faces the lumen of the er. if this protein is then moved to other endomembranes, at which surface of the membranes given below is this binding site unlikely to be found? a. internal face of the golgi apparatus membranes b. the internal face of lysosome membrane c. facing the intermembrane space of the nuclear envelop membranes d. the lumen face of the vesicle just derived from the golgi apparatus e. the cytosolic face of the plasma membrane