Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

Username is available taken
show password

Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Didn't know it?
click below
Knew it?
click below
Don't Know
Remaining cards (0)
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Humans & environment

List 4 reasons why the quantity of food produced bu agriculture has increased enormously in the last century. More mechanization - using tractors instead of animals, using fertilisers, using herbicides, using pesticides, selective breeding.
Explain what is meant by monoculture. A large area on which a single variety of crop is grown
Describe 2 problems caused by monocultures. 1. They reduce biodiversity. 2. They can lead to increases in sizes of pest populations.
Describe 2 problems cause by intensive livestock farming. 1. It requires high inputs ( a lot of money has to be spent on buying food for the animals). 2. It’s easy for disease to spread among the animals, so antibiotics may be used, increasing the strains of bacteria developing.
Outline the main ways in which humans destroy habitats. By cutting down forests, polluting land & water, mining, building houses, roads & industries etc
Explain how extensive deforestation can affect the amount of carbon dioxide in the air. Growing trees take CO from the air for photosynthesis. If trees are removed, then less CO is removed. If the trees are burnt, this produces CO that goes into the air.
Explain how deforestation can cause soil erosion. Without trees rain can easily wash the soil down the slope. Trees intercept raindrops as they fall, reducing the force with which they hit the soil. Without trees, rain hits the ground harder so that soil is loosened & washed away.
Explain how deforestation can cause flooding. Trees absorb water from the soil. Without trees less water is absorbed & more runs off the surface of the land increasing soil erosion & flooding.
Created by: Nandin
Popular Biology sets




Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
restart all cards