A crucible of 5 g m weighed 10 gm after filling with fresh soil. it is then heated in an oven at 100°c for 1 hour. After cooling in a desiccator, the weight was 8 gm. The percentage of water in the soil is

The highest level of ecological organization is the

The mangrove swamp in Nigeria is restricted to the

A biotic factor which affects the distribution and abundance of organisms in a terrestrial habitat is

In which of the following Nigeria states can mountain vegetation be found?