B.11 Controlling Weeds and Pests

Question 1

what are some drawbacks of herbicides

Answer 1

-Disrupts the balnce of the food web
- it can pollute water sources
-weeds may become resistant to it

Question 2

what are pesticides

Answer 2

substances that kill insects

Question 3

What is biological control?

Answer 3

a natural predator or is used to control a pest

Question 4

What are some examples of biological control?

Answer 4

Lady bugs and Aphids.
Bats and mosquitos.

Question 5

what are Herbicides

Answer 5

Chemicals that kill plants [ex weed killer]

Question 6

what are some drawbacks of pesticides?

Answer 6

-can kill pollinators
-insects may become resistant to it
-small amounts are on our food when we buy it

Question 7

what are some drawbacks of biological control

Answer 7

-Doesn’t get rid of all pests
-changes the balance of the ecosystem
-Takes a while