1
How long can DDT stay in the environment?
for years
What kind of plants can you find underwater in the rice puddles?
algae
What happens to the sea water during winter?
freezes
What helps the animals to survive ?
adaptation
Why do ppl use DDT
to kill insects
What's called the feeding relationship between animals?
foodweb
Describe the desert
the desert is a sandy with an extreme climate place
When was DDT produced ?
1940
What do birds do at the rice paddy?
birds feed in and around the paddy fields
WHo lives in the mangrove trees
Crab-eating macaque
What are three more examples of ecosystems?
desert, rice paddy , arctic ocean
What kind of animals can avoid overheating?
nocturnal
What is nectar?
it is a liquid and sweet substance
Can DDT be broken down?
no it is persistent chemical
What is the name of study ecosystems?
ecology
What is pollen
Pollen is small grains from the male part of a flower
Who wrote this book "Silent spring"
Rachel Carlson
What do farmers add to the paddy fields?
fertiliser
Give me an example of the toxic effect?
shell of the bird's eggs are getting very thin
By what wren’s eggs are protected?
by Teddy bear chollas
What is biomagnification
as you going higher in the food chain the biggest amount of DDT you face in the organisms
What is PPM
parts per million
What do Gila birds do with the cacti?
make holes in the cacti to make their nests
What is bioaccumulation?
the longer organism lives and more DDT it takes in
How does the bright light help to plants?
helps plants to photosynthesise and producing food for animals