Populations and Sustainability

The number of years it takes a population to double in size based on its current growth rate

• death rate
• mortality rate
• birth rate
• doubling time

Which is NOT a reason for the decreasing death rate?

• Better health care
• Greater food supply
• Cleaner water
• More pollution

Tags

NGSS.MS-LS2-1

The average number of people per square mile

• population distribution
• population density
• urbanization
• population rate

Without other changes to a population, which of the following will cause a population to increase in size?

• The birth rate equals the death rate.

• The birth rate is less than the death rate.

• The birth rate is greater than the death rate.

• The birth rate and the death rate both equal 0.

Which of the following is an example of an abiotic limiting factor on population size?

• water availability

• Availability of food

• disease

• predation

Tags

NGSS.MS-LS2-4

Carrying Capacity is

• the capacity of what one person can carry per day

• how many animals you have in your daily bag limit at the end of the year

• wildebeest at a watering hole with zebras

• the maximum number of population size that the ecosystem can support

Tags

NGSS.MS-LS2-4

When a population grows past the ecosystem's carrying capacity, what happens to the population?

• Continues to grow
• The population starts to die off to return to carrying capcity
• The population will go extinct due to lack of resources
• The population grows then finds a new carrying capacity

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

The Red dotted line reperesents what?

• Carrying Capacity

• Average of population

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Farmers sometimes swap their crops. They plant different kinds of crops each season, a technique called:

• No-till Farming

• Crop Rotation

• Irrigation

• Seed Treatment

Tags

NGSS.MS-LS2-5

A sustainable agricultural technique that doesn’t involve disturbing the ground through the digging or stirring of soil is called:

• No-till farming

• Fertilising

• Irrigation

• Crop Rotation