Principles of Ecology

Allliving things _____ to make more living things.

The series of changes that an organism undergoes during itslifetime

Anorganism's tendency to maintain a stable internal environment

What is the study of how things interact with their environment?

Thegradual change in the characteristics of a species over time

networkof interconnected food chains

Seastars live in saltwater. Some in tidal pools, others in the deep ocean. This describes their

Theinformation gathered from experiments is called _____.

Livingthings change during their lives through _____.

A relationship where both species benefit.

Anexperiment is _____.

Livingthings adjust to a stimulus by a reaction called a(n) _____.

Theprocess whereby an organism produces more of its own kind

What is the process by which producers make their own food?

Ecologists who study how many species interact is interested inthe organization level: ___.

feeds on dead organisms

breaks down dead organisms

Theliving and nonliving factors in an organism's surroundings

Cougarsare predators that often eat weak or diseased animals. This describes the cougar's ___..

Anystructure, behavior, or process that enables an organism to better survive inan environment

Atestable explanation for a question or problem is a(n) _____.

structuredprocedure for collecting information to test a hypothesis is a(n) _____.

Thepart of an experiment in which all conditions are kept the same is the _____.

layerof Earth that supports life

Interaction between species & abiotic parts of the environment is what level of organization?.