Populations and Communities

All of the following are examples of limiting factors for a population except...

• space
• food
• time
• weather

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

In general, which of the following is a true statement about population size?

• If birth rate < death rate, population size increases
• If death rate < birth rate, population size decreases
• If birth rate > death rate, population size increases
• If death rate > birth rate, population size increases

A freshwater lake has a muddy bottom, which is home to different types of algae and other organisms. Many species of fish feed on the algae. Which of the following is an ABIOTIC factor in this ecosystem?

• the temperature of the water
• the color of the algae
• the number of species of fish
• the amount of food available to the fish

Tags

NGSS.MS-LS2-3

Which of the following lists the levels of organization in an ecosystem from the smallest unit to the largest?

• population, organism, community, ecosystem
• organism, population, ecosystem, community
• organism, community, population, ecosystem
• organism, population, community, ecosystem

All the living and nonliving things that interact in a particular area make up a(n)

• ecosystem
• population
• community
• biome

Tags

NGSS.MS-LS2-3

All the different populations that live together in an area make up a(n)

• ecosystem
• community
• habitat
• organism

Tags

NGSS.MS-LS2-4

The way a species makes its living is ...

• natural selection
• adaptation
• niche

How do you think an increase in the fox population affected the hare population?

• The hares decreased beacause there were fewer food sources
• The hares increased because there were more food sources
• The hares decreased because there were more fox to prey on them
• The hares increased because they had more space 

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

An interaction in which one organism kills and eats another organism

• competition
• mutualism
• commensalism
• predation

Tags

NGSS.MS-LS2-2

Environmental conditions that prevent populations from increasing

• abiotic factors
• carrying capacity
• limiting factors
• biotic factors

Tags

NGSS.MS-LS2-4