Most scientists attribute the mass extinction of the dinosaurs to
A) predation by mammals.
B) meteorite impact.
C) sea-level change.
D) gradual climate change.
E) sunspots.
B
You might also like to view...
Which one of the following insect organ systems has placed the greatest limitation on their body size?
A. nervous system B. digestive system C. respiratory system D. reproductive system E. excretory system Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about insects? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
A plant cell with a ?P???0.2 MPa maintains a constant volume when bathed in a solution that
has a ?S????0.2 MPa and is in an open container. What do you know about the cell?
a. The cell has a ?S???0.4 MPa. b. The cell has a ?S????0.2 MPa. c. The cell has a ?S????0.4 MPa. d. The cell has a ?????0.4 MPa. e. The cell has a ????0.2 MPa
The circumcision of males involves the removal of the _____.
A. fourchette B. perineum C. foreskin D. urethra
An amphipathic molecule has:a
two polar ends. b. two hydrophobic ends. c. a hydrophobic and a hydrophilic portion. d. only one hydrophobic end. e. only one hydrophilic end