Environment
is ……..types.
a) two
b) three
c) four
d) five
Explanation: 1. Physical, 2. Chemical and 3. Biological
The earth’s atmosphere contains almost 80%.....
a) nitrogen
b) phosphorus
c) oxygen
d) hydrogen
The flow of chemical elements and compounds between living organisms and the physical environment is called…
a) water cycle
b) biological cycle
c) chemical cycle
d) biogeochemical cycle
A study of communities in relation to environment is called……..
a) social ecology
b) hetero-ecology
c) synecology
d) autoecology
Crop rotation leads to…….
a) increase in the soil nutrient
b) soil fertility
c) more aeration of soil
d) all of these
Each organism has a definite functional position different from either organism of the locally is called…….
a) niche
b) community
c) habitat
d) specious
Explanation: A species' ecological niche can be defined as the range of resources and conditions allowing the species to maintain a viable population.
