Fossils fuels are still used, but what developers are slowly starting to look for and use alternative energy resources such as solar power. what are the reason (s) why they are starting to look into alternative energy sources?

fossil fuels produce waste?
alternative energy sources are renewable?
fossil fuels are increasing in price?
all the above?

Which flexible structure that supports the nerve cord and led to the backbone

Pepsin is an enzyme in the stomach that breaks polypeptides into amino acids. pepsin functions best at a ph of around 1.5. what would be the most likely result if the ph of the stomach were increased to 5

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