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? Cardinals are seasonal eaters, much like most songbirds, as they feed on insects during the summer and seed during the winter. Find out what cardinals usually eat with helpful information from an Audubon Society member in this free video on wild birds. Part of the Video Series: Wild Bird Food.
Gopher tortoises eat many things. They eat grasses, weeds, herbs, fruits, mushrooms, pads, and flowers of prickly pear cactus. Some of thier favorite foods are gopher apple and saw palmetto berries. They will also eat bones from dead animals.nce they find their food they sniff it and start chomping away.Mostly they eat many grasses as their diet.The tortoises don't have teeth just beaks to eat their food.Then they use their tongues to bring food into its mouth. Tortoises really don't search for water unless there is a drought.