Module 3 OYO

Biome, Population, Community, Ecosystem, and Biosphere

list the five levels of organization (not species) that ecologists’ study from smallest to largest

Biotic factors

living organisms that are a part of an ecosystem

Abiotic factors

nonliving physical or chemical conditions that affect an ecosystem

plants and animals

examples of biotic factors

sunlight, water temperature, wind, soil, and natural disturbance

examples of abiotic factors

It is added to the air, because it releases it after death

If a tree dies and slowly rots away, does this add carbon dioxide to or remove it from the air?

Photosynthesis of Phytoplankton

A large amount of the carbon dioxide goes into the ocean but is not dissolved. If it isn’t dissolved, what is it used for?

The level of oxygen would go way down

Suppose producers made only the food that they needed and never made any extra. What would happen to the oxygen level in the atmosphere?

all the consumers would die because we need oxygen to live, eat, and breath

Suppose producers made only the food that they needed and never made any extra. What would happen to the consumers of creation?

Plants use carbon dioxide for photosynthesis to make glucose, which produces oxygen

Explain how photosynthesis is involved in cycling carbon dioxide and oxygen

Respiration uses oxygen to break down glucose for fuel. During this process, carbon dioxide is released

Explain how respiration is involved in cycling carbon dioxide and oxygen

1st way bacteria in involved in the nitrogen cycle

Nitrogen-fixing bacteria convert atmospheric nitrogen to ammonia

2nd way bacteria is involved in the nitrogen cycle

Nitrifying bacteria convert ammonia to nitrates or nitrites

3rd way bacteria is involved in the nitrogen cycle

Denitrifying bacteria convert nitrates to nitrogen gas

mainly by climate, which includes the abiotic factors and precipitation level

How are biomes classified?

be able to store water to stay alive

What characteristics would expect desert plants to have?

and desert animals burrow during the day and are active at night when it is cooler

What characteristics would expect desert animals to have?

They use factors such as water depth and the amount of sunlight available for photosynthesis

Some aquatic biomes are divided into zones. What factors do scientists use to make these divisions?

the ocean, coral reefs, and estuaries

What are the main marine biomes?

lakes, ponds, rivers, and streams

What are the main freshwater biomes?

competition, predation, and symbiosis

What are the three types of community interactions?

mutualism, commensalism, and parasitism

What are the three types of symbiosis?

Primary succession begins on baron rock while secondary succession begins on existing soil

What is the difference between primary and secondary succession?

17.              Geographical distribution, population density, and growth rate characteristics

What three characteristics do ecologists use to describe populations?