Ecosystems
What is the definition of a biotic factor?
The living things in an ecosystem
What kind of relationship is commensalism?
One species is benefiting and the other species is neither benefited nor hurt (+/0)
Calculate the growth rate: in 2026 the population of deer is 13,000 and in 2016 it is 10,000
300
What is a key characteristic of a population
Every member is the same species
Can you always eat and chew gum in the lab area?
No
What is the smallest level of ecological organization?
Organism
What is not a benefit of group behavior?
Disease transmission, More visible to predators, Increased competition (any of these works)
What is an inference?
An inference is a conclusion drawn from data/observations
What is a Density-Independent Factor?
A factor that affects an ecosystem/population regardless of population numbers
Define Permeability
Permeability is how well water flows through a substance
What is an example of a limiting factor?
Any valid limited resource (food, water, shelter, etc.)
What is the difference between parasitism and predation?
Parasitism does not kill the host, it just weakens. Predation immediately kills the prey.
What does a line of best fit need?
Equal amount of points on top and bottom
If a growth rate is positive, what does that mean?
The population is increasing
If someone spills a large amount of chemicals on their body, what should they do?
They should go to the lab shower and pull the handle to make sure all the chemicals get off + tell the teacher
How does the biodiversity of an ecosystem relate to the health?
The more biodiversity, the healthier the ecosystem
Give an example of a mutualism relationship from class and explain how both species benefit in the relationship.
Bees + Flowers: bees use nectar for honey and flowers get pollinated to reproduce
Sea Anemones + Clownfish: Clownfish get protection from predators and sea anemones get a cleaning crew
What is the carrying capacity of the ecosystem if each panther needs 50 kg of food and there is 400 kg total?
8
If the species is above the carrying capacity, what would happen?
Some of the species would die out because there isn't enough food/resources for all the organisms
Name four safety items found in the class?
Fire alarm, emergency exit, first aid kit, glass trashcan, lab shower, eye wash, fire blanket, fire extinguisher
Is soil an abiotic or biotic factor? Why or why not?
Soil is abiotic because it is not alive but supports all the living things in an ecosystem
How is competition an animal relationship?
Competition is when two animals are competing for the same resources, so both animals are harmed in the relationship
What are the four things your graph always needs?
A title, labeled x and y axis, all points plotted, equal spacing between each x and y interval
Explain the competitive exclusion principle
Two species cannot exist indefinitely in the same niche, so eventually, one must win out
How long do you need to rinse your eye in the eye wash if you got something in it?
15 minutes