Answer:
Each column is called a group. The elements in each group have the same number of electrons in the outer orbital. Those outer electrons are also called valence electrons. They are the electrons involved in chemical bonds with other elements
Answer:
may be A.................. ....
Forests and prairies are examples of ecosystems on land. An ecosystem is a community of living things. Members survive by interacting with each other and with their environment. At first glance, the ocean seems like one big ecosystem.
About 75% of earth’s surface is covered by the ocean
Answer:
Most liking the puck will go flying because of the force of the hockey stick.
