What is the ecosytem created by man called?
Articial
The trees which shed their leaves in autumn are called?
Deciduous Trees
By counting the rings of the trunk of a felled tree, what can we understand?
It Age
How is it better to put the garbage in the recycling bin? In a bag or in bulk?
In Bulk
Noise is a type of pollution. True or False?
True
What do we call the activity that threatens the marine ecosytem?
Overfishing
Name an animal that is at risk of extinction due to melting ice.
Polar Bear
What is the gas with the greatest contribution to the enhancement of the greenhouse effect?
Carbon Dioxide
