1.Bats and humans are both mammals and share a common ancestor. Because of this, a human arm and a bat wing have similar bone structure. In contrast, bird wings and bat wings have different structures. Explain these relationships in terms of homologous and analogous structures.

Ageologist determines that a sample of a mineral cant be scratched by a steel nail but can be scratched by a masonry drill bit based on this information the sample mineral has to be softer than

'which of these statements about the scientific method is not true? all experiments must follow the same number of steps in the procedure. experiments may be repeated several times. some unexpected results can be beneficial. experimental results may or may not support the hypothesis.

Will mark brainliest. (20 points) many have pigments structures known as eyespots that detect direction of light. a. b. archaebacteria c. protists d. none of the above