What describes the feeding relationships between living organisms in a habitat?

Food Chain

What is the total mass of organic material (no water) of an organism or population called?

Biomass

What are the differences between individuals of the same species called?

Variation

What is the process of living organisms producing offspring called?

Reproduction

What term refers to all the plants and animals in a particular environment, and their relationships with each other and their environment?

Ecosystem

What is 'Interdependance'?

Where the population number of an organism depends on the population number of another organism.

What is a 'Species'?

A class of related, living organisms which are able to breed and produce fertile offspring.

What is an 'Adaptation'?

A change or adjustment which improves an organism's ability to survive and reproduce in a given environment.

What is 'Natural Selection'?

The survival of individual organisms which are best suited/ adapted to their environment. 

What are the 'producers' in this image?

[image]

Algae