Where does the energy needed for the water cycle to occur, come from?

What type of bond is found BETWEEN water molecules?

Which of the following is the correct molecular structure for water, H₂O?

The type of bond that holds the hydrogen and oxygen atoms together within a water molecule are known as ____ bonds.

What do 'plants' do with the carbon they receive?

How does carbon get from animals and back into the atmosphere? (CHOOSE ALL THAT APPLY)

How do animals get carbon?

How is carbon recycled?

Which process contributes carbon dioxide to the atmosphere?

What converts nitrogen gas into a usable form for plants and animals?

The process in which nitrogen circulates and is recycled is called

Organisms that need nitrogen to survive.

How do animals get the nitrogen they need?

Plants and animals cannot use nitrogen directly from the air.

Phosphorus is a critical element for organisms, as it helps make up numerous biomolecules such as ____.

_____ competition occurs between members of the SAME species for food, mates, and other resources

_____ competition occurs between members of DIFFERENT species for food, mates, and other resources

A group of individuals belonging to the same species living in the same general area at the same time.

Number of individuals per unit area or volume.

At what population was carrying capacity met?

Exponential population growth can be described as

What limits Population Growth?

Density-independent limiting factors to population growth includes

Factors in the environment that depends on the number of organisms in a population.

droughts, floods, hurricanes and fires

What happens if a population grows past its carrying capacity?

What is the carrying capacity of the graph?

Species that have a capacity for a high rate of population growth (r). They tend to have short life spans and produce many, usually small, offspring, to which they give little or no parental care or protection. Examples include algae, bacteria, and most insects.

Species that tend to do well in competitive conditions when their population size is near the carrying capacity (K) of their environment. They tend to have long lifespans, reproduce later in life, and produce few offspring. Examples include elephants, whales, humans, saguaro cacti, and most tropical rain forest trees.

A producer

A primary consumer

An animal that only feeds on plants is called

A secondary consumer

Carnivores

The first trophic level is

tertiary consumers

How many calories will be passed on from 250 to the next trophic level?

a producer always

Which trophic level makes its own food?

A food chain shows more feeding relationships than a food web

Which animal is an omnivore?

The primary consumer in this image is the....

The metabolic activity required to utilize the energy available in any given trophic level results in a loss of ______ energy to the environment, as heat.

The energy available to organisms _____ from lower-order trophic levels (producers) to higher-order trophic levels (tertiary comsumers).

Biologically _____ ecological communities are more resilient to environmental changes, and therefore more stable.

_____ biomes are those that are on land.

_____ biomes include oceans, lakes, and rivers.

_____ water occurs when oceans and rivers meet.

A species that plays a far more important in its community than its relative abundance might suggest.

A keystone species that create, modify, or maintain the landscape around them. For example, a beaver.

Prairie dogs are an important food source for 130+ species. Their digging and burrowing create healthy soil for grasslands and their burrows become shelter for many other animals. Which two types of keystone species are they?

The ecological role an organism performs in their specific environment is considered the organism's...

What does the word biodiversity mean?

The Amazon Rainforest is very species-rich, as it is home to 10 million species. The Sahara Desert is far less rich, with only a few thousand species. Which ecosystem has less biodiversity?