Structures responsible for movement in an Echinoderm:

What is advantage of undergoing metamorphosis?

For coordination compounds that have a formula ending with “● nH2O”, when do you include the mass of the hydrates in the molecular mass calculation?

Why do we heat the beaker when doing the redox titration?

Which Group I chloride is the most soluble in water?

Why is it important to note color changes of the precipitate or supernatant in a qualitative analysis?

What is an effective way to avoid a false positive when performing a qualitative analysis?

This class of molluscs includes Nautilus, Squid and Octopus:

Look at the image below. What major theme in biology does it represent?   

Please use this information to answer the following question(s).The collared lizard is a species found in the Desert Southwest. Male collared lizards show considerable color variation, ranging from brightly colored to a very dull pattern. Your goal is to determine the function, if any, of male color patterns in collared lizards, using the scientific method. Your tentative explanation is that male color plays a role in attracting females for mating purposes. You predict that females will preferentially choose brightly colored males over dull-colored ones. To test your prediction, you observed the interactions of female collared lizards with their male counterparts. You selected males that were the same age and size, and that differed only in their coloration pattern. You placed equal numbers of the two types of male lizards, bright and dull, in aquariums, along with one female lizard per aquarium. Out of 350 aquariums observed, the female chose to mate with the brightly colored male 277 times, and the dull-colored male 70 times. In three instances, the females did not mate with either type. A picture of the lizards is below:    Answer the following question.What conclusion can be drawn from the data?