Answer:
Olivine is the first mineral to form in cooling magma
Answer:osmoregulation is important in maintaining the salt and water concentration in the body of plants and animals
Explanation
Xx - female. Xy - male. egg already has an X chromosome so it depends on the other. If second one is X than it's a girl. If Y - a boy
Usually, only mammals undergo Carnegie stages.
Therefore, 'B. Sheep' would be the correct answer.
