Fossils of an animal called ichthyostega shows that it had lungs and legs. it also had teeth and a tail similar to those of fish. ichthyostega is considered to be one of the first amphibians. other fossils show that amphibians lost these fish-like features. how might scientists interpret the fossil of ichthyostega?

Sediment layers stop lateral spreading when: they encounter a barrier they encounter an opposing current they run out of additional sedimentary material

Read the scenario below and answer the question that follows. hallie is reading a novel in the library when susan, her best friend, slumps down in a chair next to her. susan doesn't say anything, but hallie knows that susan is upset because she is slumping in her seat and rolling her eyes. a psychologist would explain that hallie is interpreting her friend's emotion based on a. the behavioral component of emotion b. her friend's ability to regulate emotion c. the verbal component of emotion d. the physiological component of emotion select the best answer from the choices provided a b c d

What is the number of cells produced in mitosis