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Continuous variations are variations which change gradually within a population e.g height in humans.

Clay soil's effect on vegetation is that it supports light vegetation such as scanty vegetation.

Turbidity is not a factor in terrestrial habitat it is a factor in aquatic habitat because turbidity also means cloudy which is an aquatic factor.

Hyphae in a mushroom is a vegetative body parts made up of time and delicate thread containing nuclei

It is found in moist environment because of its adaptive features.

Euglena vivids possesses chloroplast (plants feature) in order for it to carry out photosynthesis

Tuberculosis is classified under diseases causes by bacteria not virus.

Commensalism is the association between 2 organisms living together in which only one benefits from the association while the other is neither benefited nor harmed e.g Ramora fish and shark. Commensalism is an example of symbiotic Association.

Thoracic cavity assists in breathing alongside the ribs because it is found in the chest region.

Southern Guinea Savanna is the largest of all biotic community in Nigeria found in Oyo, Osun, Ekiti Status etc.

In an ecosystem the organism which changes light energy into stored chemical energy is the producer.

In the theory of use and disuse by Lamarck Jean he did not propose that there is natural selection of offspring.

During the process of growth the cell does not reduce, it divides, enlarges and differentiates.

Vestigial organs are remaining parts of one's functioning organ e.g appendix in human which function as caecum in herbivore which are minute and are incomplete organs with no special function.

Synecology involves the inter-relationship between groups of organism or species of organisms living together in an area.