Scientists have found that mars has water ice at its poles, even though volcanic activity has never been observed on mars. would this prevent the inside-out model from becoming a theory? a. yes, because any comet that hit earth also hit mars. b. yes, because it shows that volcanic activity is necessary for a planet to have liquid water. c. no, because no data from mars is applicable to earth. d. no, because a single observation is not sufficient to discredit a theory.

The skeletal system performs a variety of functions that are crucial to maintaining life processes. what function is performed in the bone marrow, but not in the ossified bones of the skeleton? a oxygen transportation c mineral storage b. muscle attachment d red blood cell production

Chicken pox and hepatitis are bacterial diseases. true or false?

Indicate whether the following statements about the biases in the fossil record are true or false. a) inland species are more likely to be preserved than marine species b) organisms with hard body parts are more likely to be preserved than are those composed soft tissues. c) species that existed over a larger area are more likely to be preserved than species existing over a smaller area. d) organisms that lived very long ago are more likely to be found as fossils than organisms that lived relatively recently e) the fossils of larger organisms are more likely to be found than the fossils of smaller organisms