Levels of Biological Organization

A group of the same species living together is a(n)

Consists of all the biotic and abiotic factors of the environment...

The human eye is an organ because it is a group of _____________ working together.

A group of tissues that work together to perform a similar function is called_____. (Examples include the heart, lungs or stomach)

The ___________ is the basic unit of life

It consists of various ecosystems that have common characteristics.

Organs that work together to perform a related function is called _____________?

One lion within a pride of lions is known as a(n)...

All ecosystems combined...

True or False. to achieve the balance on Earth, all living organisms are grouped in hierarchical order.