Pesticide pollution

Question 1

2 effects

Answer 1

-Direct could be kills or sterilisation for target organisms
-indirect could be food chain impacts lower pollination

Question 2

Neonicotinoids

Answer 2

-relatively persistent
-inhibit acetylcholinesterase
-highly toxic to bees
-build up in aquifers
-impact on non-target species increased by synergistic action

Question 3

Organophosphates

Answer 3

-low persistence
-highly toxic to mammals
-Neurotoxin

Question 4

2 ways of reducing pesticide pollution

Answer 4

-use restriction , DDT banned in most countries
-Application timing such as spraying on night when crops aren’t flowering will reduce effect on bees