With their lack of gills, dolphin must surface every 10-15 minutes to breathe using a structure called a blowhole located on the top of its head. young dolphins, when born, also have a small amount of hair on their lips which falls off shortly after birth. which would be the best classification group for a dolphin?

Here's one way to follow the scientific method. place the missing steps in the correct position in the process.

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

Which best explains why there are 64 possible codons in the genetic code and only 20 amino acids that make protiens of living organisms on earth