topic 2

Question 1

Pesticides are a group of what?

Answer 1

Chemicals to keep pests away

Question 2

What are 3 pros of pesticides

Answer 2

Protects crops, more supply of crops, cheaper food due to higher supply

Question 3

What are 2 cons of pesticides?

Answer 3

Unintended targets like bees and humans, impacts on soil quality, water quality and air quality

Question 4

What is the major concern with pesticides?

Answer 4

They can disrupt the entire ecosystem they are in and lowers the biodiversity of a given area

Question 5

What was the use for DDT

Answer 5

To kill off lice and other harmful insects

Question 6

What is bio magnification?

Answer 6

Chemicals accumulating and increasing as it goes up the food web

Question 7

Birds had trouble increasing populations which led to their egg shells being weaker, why?

Answer 7

DDT levels increased in their populations due to bio magnification

Question 8

Do pests become more resistant to pesticides like DDT?

Answer 8

Yes due to increased fitness

Question 9

What are 4 alternative choices of pesticides

Answer 9

Biological controls, crops rotation, going organic and controlling pests using other bugs like ladybugs

Question 10

Why is DDT bad?

Answer 10

because it has many unintended targets and damages the ecosystem