Environmental Science
Which of the following is false?

Quantity of biomass in a trophic level at a particular period is called as standing crop
Phytoplanktons are the pioneers in the aquatic ecosystem
Rate of succession is faster in secondary succession
The succession that occurs in newly cooled lava is called primary succession
The energy content in a trophic level is determined is determined by considering a few individuals of a species in that trophic level.

ANSWER DOWNLOAD EXAMIANS APP

Environmental Science
The aurora is produced by:

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
Scattering of sunlight in the upper atmosphere
The combination of molecular and atomic oxygen to form ozone

ANSWER DOWNLOAD EXAMIANS APP

Environmental Science
The most important reason why summers in the Southern Hemisphere are not warmer than summers in the Northern Hemisphere is that:

The earth is closer to the sun in January
Over 80% of the Southern Hemisphere is covered with water
The sun's energy is less intense in the Southern Hemisphere
The earth is farther from the sun in July

ANSWER DOWNLOAD EXAMIANS APP