Sad Pics Of Girl News

Sad Pics Of Girl wallpapers


How it works

weather

We talk about the weather every day, but what exactly is it? We can define it as the state of the atmosphere. The amount of wind, the temperature, the moisture, and cloudiness are some of the things that make up weather. ... read more

10 cool things we learned this month

1. Primates like to get tipsy ... read more

compounds, acids and bases, mixtures, and solutions

Every material is made of either a pure substance or a combination of substances. A substance is pure if it contains only one type of element. An element is a substance made up of all of the same type of atoms. Oxygen is a pure substance. It only contains oxygen atoms. Elements combine in several ways... read more

atoms and elements

Atoms are the building blocks of all matter. Atoms are very small. Many atoms put together make up everything in the world. Atoms are so small that you cannot see an individual atom without a special microscope. All atoms are made of the same basic parts. Putting these parts together in different ways... read more

people who study animals

There are many things about animals that can be studied. We study their anatomy, their behavior, and how they live in the wild. We also learn more about our own bodies, behavior, and development when we look at other animals. We study how animal life can have an affect on humans and how humans can hav... read more