These trees live along the shore in tropical waters with their roots in the salt water. Kangaroos, wallabies, koala, wombats, and opossums are marsupials. The micropyle is the large depression at the top of a butterfly's egg. This small pit marks where the sperm entered the egg. While the egg is developing, air and water enter the egg through the micropyle.
Many butterflies migrate in order to avoid cold weather.
Butterfly migration is not well understood. A million is a thousand thousand. The dinosaurs lived millions of years ago. A mimetic group or ring is a group of unrelated species that have similar markings which benefits all in the group as they gain protection from predators. Many predators may have gotten sick from eating one of the poisonous species and will avoid all similar looking animals in the future.