What is an ecosystem
All abiotic and biotic factors in a defined geographic region
When resources are plentiful, populations will likely ___________; when they are scarce, populations will ____________
increase; decrease
Describe the trend in the Hare population

Hare population is decreasing over time
These can be grouped into two categories-- for food and for shelter
Resources
What is an independent variable?
What is being changed on purpose in an experiment
Orangutans serve an important role as seed dispersers, which means they help increase the population of fruit trees
A predator-prey population is shown below. The predator is the Lynx.
Provide a hypothesis as to why the Lynx population is decreasing
Provide a hypothesis as to why the Lynx population is decreasing
The Lynx population is decreasing because the Hare population is also decreasing. The hares are the food source of the lynx and without food they will not survive
What is a dependent variable?
What is changing as a result of something in an experiment
List 3 examples of an abiotic factor
Soil, Precipitation, Temperature, Rocks, Air Pressure
Negative: Lack of biodiversity; less resistant to disturbances
What data story is this graph telling you?

As human population increased, so did the number of extinctions
What are 3 examples of biotic factors
What is a predator-prey interaction?
Answers will vary
What resources were jeopardized by the destruction of the Rainforest?
Fruit Trees and Habitat Trees
What is this graph's data story?

The amount of land used to grow Palm Oil in Indonesia has increased
What is biodiversity?
The amount of species that are found an ecosystem
What is it called when multiple organisms are all trying to obtain a limited number of resources?
Competition
If the amount of orangutans decreased, then the populations of....
Answers will vary
The graph above gives the population of Sumatran Tigers over time in Indonesia.
What claim can you make about why the population of tigers is decreasing?
Populations of tigers are decreasing due to a lack of resources. The orangutan population is decreasing, which is a source of food for the tiger populations.
Define the word in your answer
Extinct: When a species is no longer alive on Earth