2024-25 Ecology Frequently Missed

Determine if each example below is an abiotic or biotic factor in an ecosystem

Groups:

(a) Abiotic Factors

,

(b) Biotic Factors

• water availability
• pH level
• sunlight
• number of predators

• soil type
• insect population

• type of bacteria

• temperature
• amount of algae

Tags

NGSS.MS-LS2-1

In an aquatic ecosystem the increased carbon dioxide has affected the pH of the water making it more acidic. This has caused a decrease in the oyster population. Identify the abiotic factors in this scenario.

• water acidity

• level of pH

• oyster population

• amount of carbon dioxide

Tags

NGSS.MS-LS2-4

In a terrestrial ecosystem deforestation has reduced the number of trees in the ecosystem. This loss of trees may also impact which biotic factors in the ecosystem?

• the number of herbivores

• the amount of available oxygen

• the type of producers

• the nutrients in the soil

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is the ideal number of black bears that can be supported in this ecosystem?

• 15

• 18

• 20

• 23

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

This graph shows the population of turtles in a pond ecosystem. According to the graph what is the carrying capacity of turtles for this pond?

• 200

• 250

• 300

• 350

Tags

NGSS.MS-LS2-1

What is the population size when the resources become limited and the population stabilizes? This is the carrying capacity for this species within the ecosystem.

• 10

• 20

• 30

• 40

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Match the ecology terms with their definitions

• all the organisms in a area

• population

• all the interbreeding organisms

• community

• a single living thing

• organism

• everything biotic and abiotic in an area

• ecosystem

A population is able to grow exponentially when resources in an ecosystem are​ (a)   . When resources become​ (b)   a population has reached its carrying capacity.

• abundant
• limited

Tags

NGSS.MS-LS2-1

Pair the terms together that have the same meaning when it comes to the availability of resources in an ecosystem.

• Balanced

• Finite

• Unlimited

• Stable

• Limited

• Abundant

Tags

NGSS.MS-LS2-1

Which organisms are responsible for removing and returning nitrogen to the atmosphere

• trees

• cows

• bacteria

• rain

Tags

NGSS.MS-LS2-3