An ____ is made up of all the living and nonliving things in one place.

____ are the nonliving parts of an ecosystem.

____ are all the living or once-living things in an ecosystem

____ is an example of an abiotic factor.

Which is NOT an example of an abiotic factor?

____ is an example of a biotic factor

Some organisms, such as plants, require ____ energy to make food.

Ecosystems with more sunlight tend to have higher ____.

Earth's ____ contains many gases that organisms need, such as water vapor, oxygen, carbon dioxide, and nitrogen.

The nutrient content, texture, moisture content, and depth of ___ affect which organisms can live in an ecosystem.

A ___ is made up of all the members of one species that live in an area at one time.

A ___ is all the populations that live together in an ecosystem at the same time.

A ___ is a geographic area that contains ecosystems with similar biotic and abiotic features.

All biomes are part of the ____, which is the part of Earth that supports life.

____ biomes include forests, deserts, tundra, and grasslands.

Terrestrial means having to do with ____.

Aquatic means having to do with ____

Aquatic biomes include saltwater areas and ___ areas.

Changes in the environment are caused by natural processes and ____ actions

Usually, a change in an ecosystem results in ___ and negative effects.

____ is the gradual change from one community to another community in an area.

Organisms in a population interact and compete for ____, shelter, and mates

An example of a Saltwater Aquatic  biome

 would be an ____, gulf, or bay

An example of a freshwater aquatic biome would be a river, ____, stream or pond

A ____ is all the members of one species that live in an area at one time.

____ describes the number of organisms in an area relative to the amount of space available.

The largest number of individuals in one species that an ecosystem can support over time is the _____.

The potential growth of a population, if it could grow in perfect conditions with no limiting factors, is the population's _____.

All populations in a community share a ___, the physical place where a population or organism lives.

Factors that keep the growth of a population in check are called _____.

Commensalism is a symbiotic relationship in which what occurs between the organisms?

Which of the following is NOT a symbiotic relationship?

This may cause a population to increase

A shark and remora fish can be found swimming together in the ocean. The remoras may attach themselves to the shark as it swims through the water. When the shark finds food, the remoras eat some of the food not consumed by the shark. The shark feels no effect.

Ostriches and gazelles feed next to each other. They both watch for predators. Because the visual abilities of the two species are different, they can each identify threats that the other animal may not see as readily. Both species benefit.

A tapeworm in humans is not all that uncommon. The tapeworms will hook on to the inner lining of the small intestine and absorb food from the human.

Wasp larvae, as they hatch, will feast on a caterpillar. The caterpillar is weakened from the lack of food.

The oxpecker bird and the rhinoceros have a relationship. The oxpeckerreceives protection and obtains food from the ticks and other pests infecting the rhino’s skin. The rhino receives in return cleaning and early warning of approaching danger.

The plover bird sits in a crocodile’s mouth and eats the food in the crocodile’s teeth. Meanwhile, the crocodile gets a clean mouth and can continue hunting.

In which type of symbiotic relationship do both species benefit (+,+) ?

In which type of symbiotic relationship does one species benefit while the other species is not affected (+, 0)?

In which type of symbiotic relationship does one species benefit while the other species is harmed (+,-)?

What is meant by community?

What causes competition?

What happens to a species if the death rate is higher than the birthrate?

Each species in a community has a ___, which is its unique ways of surviving, obtaining food and shelter, and avoiding danger.

____ occurs when a population becomes larger than the ability of the area to support it.

Populations in a community might compete for ____ such as space, food, or water.

Populations might compete directly as they hunt each other for food or hide from ____.

What are plants called in a food chain?

In an energy pyramid, energy_______ as you move up the pyramid.

In a food chain, there are producers, consumers, and decomposers. What is the role of a producer in a food chain?

_____they make their own energy using photosynthesis

_____they must eat other organisms to obtain energy

A _____is a simple model of how energy travels through an ecosystem

A ___ is a model that shows the amount of energy in each level of the food chain.

Organisms get energy from ___, chemicals, or food

___ is the physical material that makes up the world around you

Water moves through the environment in a ___

___ is when sun heats water and turns it into vapor

____ is a fundamental building block for all living things and can be a part of protein, carbohydrate and fat molecules

Plants release ___ as a bi-product of photosynthesis

____ is when water vapor rises into the atmosphere and forms in clouds

____ eat producers and release carbon back into the environment as a waste product

Complete the following statement: “Energy _______________, while matter _____________ through the environment.”

In chemical reactions, energy is never created or ____

What organism would most likely be at the top of an energy pyramid?

Which of the following is an example of a food producer?

Which is NOT a consumer?

What is the main source of energy for most ecosystems on Earth?

An animal that gets energy from eating both plants and animals is a ___

A ___ shows how energy flows through an entire ecosystem

There are bacteria in the soil and at deep sea vents which split chemicals for their energy and make their organic molecules. This process is ___

What does a food web represent?