What materials are bones first made out of?

What is true of sea slugs in these orders

How would you describe the the organisms in the second row of model 1 that are connected to the parents by a line

Jason, a dog breeder, decides to mate a poodle with a golden labrador retriever. he wants to get puppies with the curly hair of the poodle and the color of the labrador. what concept is shown in this example? question 6 options: artificial selection adaptation evolution natural selection