Ecosystems: Biotic and Abiotic Factors

Ecosystems: Abiotic Factors

Ecosystems support life Living things depend on the environment You would not find a kangaroo in the Arctic and you won’t find a polar bear in Australia.

Ecosystems support life Living things depend on the environment Each of these organisms is suited to a certain environment.

Ecosystems support life Living things depend on the environment The kangaroo and the polar bear are able to survive despite the harsh condition of their surroundings.

Vocabulary Words ecology The scientific study of how living things interact with each other and their environment. Turn to letter “E” of you glossary, and enter the word “ecology” and the page number of your notes.

Vocabulary Words ecosystem All the living and nonliving things in a given environment. EX: An ecosystem can be as small as a meadow or a swamp……

Vocabulary Words 2. ecosystem All the living and nonliving things in a given environment. ….. or as large as a forest or a desert. Turn to letter “E” of you glossary, and enter the word “ecosystem” and the page number of your notes.

Vocabulary Words Everything on Earth is living (biotic) or non-living (abiotic). 3. Bio- means life. Biotic includes all living and once living things. 4. biotic factors The living things in an ecosystem, including things that used to be alive. Turn to letter “B” of you glossary, and enter the words “bio-” and “biotic factor” and the page number of your notes.

Vocabulary Words 5. A- means “non-” or “without” 6. abiotic factors The nonliving parts of an ecosystem, including things that were never alive. Turn to letter “A” of you glossary, and enter the words “a-” and “abiotic factor” and the page number of your notes.

The Seven Characteristics of Life Just remember MRS. GREN.

The Seven Characteristics of Life M - Movement R - Respiration: getting energy from food S - Sensitivity: being able to sense the world around them G - Growth R - Reproduction E - Excretion: getting rid of waste N - Nutrition: needing nutrients from food to survive Just remember MRS. GREN.

What is a mnemonic?

Abiotic Factors Just remember: Turtles Wear Socks At Cold Schools

abiotic factor examples 1. temperature Temperature influences where organisms can live. Temperatures on Earth vary enough that humans can’t live everywhere comfortably.

abiotic factor examples 2. water All life on Earth requires water. Most organisms are made mostly of water. Every ecosystem must contain some water to support life.

abiotic factor examples 3. Sun The Sun is the source of almost all energy on Earth. The Sun provides warmth and light, and many plants use sunlight to make food.

abiotic factor examples 4. atmosphere The atmosphere is a layer of gases that surrounds Earth. Made of 78% Nitrogen, 21% Oxygen, and 1% trace gases. Provides living things with oxygen and protects them from certain harmful rays from the Sun.

abiotic factor examples 5. climate Climate describes average weather conditions in an area over time. Weather conditions include temperature, moisture, and wind.

abiotic factor examples 6. soil Soil is made of bits of rocks, water, air, minerals, and the remains of once-living things. Provides water and nutrients for the plants we eat and is home for many organisms, such as insects, bacteria, and fungi.

These nonliving parts of the environment affect all living things These nonliving parts of the environment affect all living things. If either a biotic or abiotic factor is disturbed, other parts of the ecosystem are affected (ex: Global Warming).

Review Questions Which term refers to the nonliving things in an ecosystem? Climate factors Biotic factors Abiotic factors Atmospheric factors

Review Questions Which of these is the layer of gases that surrounds Earth? Ecosystem Atmosphere Climate Temperature

Review Questions True/False The air you breathe is mostly oxygen. Living things are made of mostly water.

Just remember: Turtles Wear Socks At Cold Schools