Environmental Science
The areas where soil is washed away into streams, transported into rivers and finally lost to the sea are called

Grasslands
Delta
Biologically sensitive areas
Ecologically sensitive areas

ANSWER DOWNLOAD EXAMIANS APP

Environmental Science
A food web is

A set of interconnected food chains, illustrating the tropic relationships among species
Like a food chain
The set of prey species that are consumed by animals in an ecosystem
The tropic (feeding) levels that can be observed in an ecosystem

ANSWER DOWNLOAD EXAMIANS APP

Environmental Science
The aurora is produced by:

The combination of molecular and atomic oxygen to form ozone
Scattering of sunlight in the upper atmosphere
Reflections of sunlight by polar ice fields
Burning oxygen caused by the intense sunlight at high altitude
Fast-moving charged particles colliding with air molecules

ANSWER DOWNLOAD EXAMIANS APP