This provides an organism with everything it needs to live, grow, and reproduce
What is a habitat?
100
The number of births per 1,000 individuals per a given period of time
What is birth rate?
100
The study of population is known as this.
What is demography?
100
These areas have a high species diversity, but are most threatened.
What are biodiversity hotspots?
100
A squirrel eats nuts during the daytime in his ecosystem, this is an example of this role an organism plays.
What is a niche?
200
This caused the human population to double from 1880 to 1930.
What is the Industrial Revolution, a combination of high birth rates and lowered death rates, and improvements in societal infrastructure and services?
200
These are the two ways a population may shrink in size.
What are emigration and death rate?
200
This is movement of people into cities from rural areas.
What is urbanization?
200
Although once used as a place to display exotic organisms, now they are used to house the remaining members of a species.
What is a zoo, aquarium, or botanical garden?
200
Lichen is made of algae and fungi, they work together and benefit each other, this is an example of
What is a mutualistic relationship?
300
This level of organization in an ecosystem is made up all of the members of a species living in a specific area, such as a prairie dog town.
What is a population?
300
Whether human, prairie dog, or deer, moving into a population is known as this.
What is immigration?
300
The percentage of members of a group who are likely to survive to a given age.
What is a survivorship?
300
These species are critical to the functioning of an ecosystem.
What are keystone species?
300
A flea on a dog is an example of this type of symbiotic interaction.
What is parasitism?
400
This is made up of all the living things in an environment plus the nonliving surroundings
What is an ecosystem?
400
The largest population an area can support due to limiting resources is known this
What is carrying capacity?
400
These typically have a higher birth rate, lower income, and lower life expectancy.
What is a developing country?
400
This is why is is better to save an entire ecosystem.
What is saving more than one species?
400
Cattle egrets follow herds of livestock to eat the grasshoppers that are stirred up by the cattle’s hoofs. Cattle egrets get to eat and the cows are unaffected
What is commensalism?
500
This is why wood is one of the most important resources.
What is provides heat for cooking and boiling water, shelter, and other resources.
500
The four main limiting factors in an ecosystem that may limit population growth
What are food, water, space, and weather/climate?
500
This can reduce the fertility rate in countries.
What is an increase in education, availability of contraception, and advertising?
500
These groups are most at risk of extinction.
What are small populations, those that migrate, or those that need special habitats?
500
These are ways in which humans influence extinction.
What is habitat destruction, poaching, introducing exotic species, and pollution?