A pulley is used to raise a heavy crate. With the pulley it only takes an effort 1
force of 223 N to provide a resistance force of 1784 N. What is the
mechanical advantage of this pulley? *

List two limitations of natural selection

Apart of an ecosystem that can restrict the growth of a population is referred to as

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