Populations and Ecosystems

An example of a population is

• all trees in a forest

• all maple trees in a forest

• all plants in a forest

• all animals in a forest

A group of different species that live together and interact in an environment are called a/an ________.

• community

• habitat

• population

• ecosystem

The average number of people per square mile

• population distribution
• population density
• urbanization
• population rate

Any thing or organism that regulates the size of a population of another organism is known as __________.

• a measure
• a limiting factor
• factorization
• predation

In a forest ecosystem, which of the following is the best example of a limiting factor for a rabbit population?

• Squirrel Population

• Sunlight

• Grass available

• Fungi growth

• foxes

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What year is the zebra population the highest?

• 1920
• 2000
• 1960
• 2020

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

According to the graph, What is causing the deer population to decrease

• They got sick
• The wolf population is decreasing
• The wolf population increased
• Nothing it's a coincidence

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What would the carrying capacity of this graph be

• 530
• 400
• 500
• 480

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

One of the main characteristics of a population is its

• dynamics
• density
• change over time

Tags

NGSS.MS-LS2-4

NGSS.MS-LS4-4

Examples of how humans negatively affect local ecosystems are

• Building dams, deforestation (cutting down trees), adding point sources to nearby streams to allow for run-off, building roads and structures, and salting roads.
• Creating laws to prohibit fishing from local streams.
• Planting trees and other plants to attract native species.
• Removing non-native species from the environment.

Tags

NGSS.MS-ESS3-3

NGSS.MS-LS2-4