Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

Bella Nat 5

U3 KA 5 Food Production

QuestionAnswer
Why are humans having to increase food production? Because of the increase in the Human Population
What are the 2 main methods of increasing food production? 1. Increasing the area of land dedicated to raising crops & 2. Increasing the efficiency of crop yield.
What is a major environmental consequence of increasing the area of land dedicated to growing crops 1. Deforestation OR 2. Habitat destruction OR 3. Desertification
What do plants need Nitrates for? To make amino acids
What 2 types of Chemicals are used to increase food productivity (Crop Yeild)? 1. Fertilisers & 2. Pesticides
What is an environmental consequence of fertiliser use? Fertilisers Leaching (leaking) into fresh water causing Algal bloom
What effect do algal blooms have on Biodiversity? Reduces Biodiversity
How do algal blooms reduce Biodiversity? 1. Reduce light entering water 2. Less photosynthesis 3. Less oxygen produced 4. Death of fish
What effect does death of fish have on bacteria numbers? Bacteria increase
What effect does bacterial increase have on aquatic (water) oxygen Decreases aquatic Oxygen
What are Indicator species? Species that by their presence or absence indicate environmental quality/pollution levels
What is an Environmental Consequence of Pesticide use? Accumulates in the bodies of organisms over time
What is the name for Chemicals (pesticides) building up in organisms over time? Bioaccumulation
What is an alternative to using Pesticides? Biological control
What is an alternative to using fertilisers? Genetic Modification of crops
Give an example of Biological control Increasing ladybird numbers to kill greenfly
Created by: nscobie
Popular Biology sets

 

 



Voices

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:
Retries:
restart all cards