A spiral galaxy like the Milky Way contains stars, stellar remnants, and a diffuse interstellar medium (ISM) of gas and dust. The interstellar medium consists of 10â4 to 106 particles per cm3 and is typically composed of roughly 70% hydrogen by mass, with most of the remaining gas consisting of helium.
What do cardinals eat for food? Cardinals eat a variety of wild and feeder seeds, including sunflower, safflower and most other seeds in basic wild bird seed mixes. In warm seasons they also eat insects anâ¦d worms and feed their babies mainly an insectivore diet.
The female northern cardinal builds the nest and incubates the eggs. When the chicks hatch they have no feathers or down, so the female broods them to protect them and keep them warm for at least 2 days. Both parents feed the chicks a diet of insects.