Which of the following is included in endangered animal?
a) horse
b) donkey
c) pangolin
d) all of these
Photosynthesis
and ……..run in opposite way to keep oxygen and carbon dioxide in balance.
a) decomposition
b) respiration
c) burning
d) all of these
What is the main reason behind global warming?
a) overpopulation
b) pollution
c) ozone depletion
d) deforestation
All pathogens are……………
a) saprophytes
b) parasite
c) mutualistic
d) none of these
Exercise:
The process which consumes carbon dioxide and produces oxygen is……
a) respiration
b) combustion
c) photosynthesis
d) fossilization
