the place where an organism lives and can find everything it needs to survive

a characteristic passed from parents to their offspring

changes in which the form or shape of a substance changes but the substance still has the same chemical makeup

a vascular plant that produces seeds that are not surrounded by a fruit

in measurements, very close to the actual size or value

matter that is made of only one kind of atom

the vast floor of the deep ocean

hard organs that have a spongy layer inside and that may help support the body or protect other organs

changes in one or more substances, caused by a reaction, that form new and different substances

the basic unit of structure and function in all living things