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Competition one of the biotic factors in ecological factors involves the interactions among two organisms of the same species/different species which outgrows the other and survives while the other cannot grow or survive

In natural selection, Darwin proposed that evolution occurred because of the following conditions except food and other needs are abundant

Fats provides more energy to animal than carbohydrates therefore containing the highest amount of energy in joules per unit weight.

Landsteiner and Lavine are scientist, they discovered the Rhesus factor in human blood.

Autecology is the study of an individual organism or a single specie of organism and no environment

Nitrobacter are chemoautrophic organisms found in soil and water responsible for the oxidation of ammonium to nitrite and nitrite to nitrate.

One of the effect of using artificial pollination in plant breeding is that it improves the variety of crops.

Halophiles are organisms that thrive in high salt concentrations. The adaptations of halophile organisms to their environment are: (a) The integrity of non-halophile macromolecules is compromised, and the flow of water out of the cell produces a Turgor effect. • (b) Moderate halophiles maintain their structures via the synthesis of compatible organic solutes. • (c) Extreme halophiles maintain their structures via equilibration of cellular and environmental salt concentrations.

They are called Xerophyte because they are species of plant that has adaptations/adaptive features like waxy cuticles which enables them to survive in extremely dry land.

Tadpole's ability to swim and adapt to an aquatic habitat is due to the presence of its tail.

The tapeworm possesses a thin membrane mostly because of it absorption of digested food from the intestine of the host.

The saliva contains an enzyme called ptyalin which helps to hydrolysis of starch to maltose partially

Vegetable contains mineral salts like magnesium, copper etc which is very essential for body growth.

Good quality food cannot provide resistance to malaria because it does not contain anti-malaria substance it only and good propr growth.

Starch is the main and first product formed during photosynthesis because the simple sugar formed is partly used by the plant and excess of it is converted into starch immediately for storage and the starch is transported to other parts of the plant through the phloem vessels for storage.