The inner planets—mercury, venus, earth, and mars—are believed to have been formed by masses of cold hydrogen and helium collisions with large galaxies the combining of asteroid-sized debris the explosion of supernovas

Name one similarity and one difference between the morphology of a brachiopod and a bivalve

The sketch shows a rynchosaur, an extinct animal that is known only from fossils. there has been much debate about the classification of these creatures. some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards.the data equally support both cases. which statement best explains how to draw a cladogram that includes the rynchosaur? draw the cladogram for amphibians. draw the cladogram for reptiles. draw two cladograms, both showing the traits, and leave it as a hypothesis. draw two cladograms, both showing the traits, and have scientists vote

When a person is exercising the body needs to deliver increased amounts of oxygen to the muscles which component of blood ensures that the muscles will receive it