THE TROPICAL DESERT AND TEMPERATE DESERT
Distribution Deserts are regions of scanty rainfall which may be hot like the hot deserts…
Distribution Deserts are regions of scanty rainfall which may be hot like the hot deserts…
This is the part of the plant which grows above the soil except the modified…
The root system is the part of the plant growing in the soil. This excludes…
The flowering plants form a group of plants known as Angiosperms. They are characterized by…
Primates are the most highly developed of all mammals with large brain, forward-facing eyes with…
Land and sea breezes are, in fact, monsoons on a smaller scale. Both are basically…
The ancient Greeks believed the volcanic eruptions occurred when Vulcan, the God of Fire, stoked…
The mammalian gametes are male gametes called sperm or spermatozoa (singular = spermato-zoon), while the…
Germination is a process by which the embryo of a seed grows out of its…
The physical setting of Africa is defined by its relief, drainage, climate and vegetation, among…
Parturition (labour) is the expulsion of the foetus, placenta and foetal membranes from the uterus….
When the embryo has been implanted, it produces four extraembryonic membranes (membranes outside the body…
Industrial enterprise in Nigeria can be broadly classified into (i) local arts and craft, and…
It is possible to identify specific relief features on topographical maps by examining the way…
The liver is the largest gland in the body. It is dark-red, spongy and lobed….
The stomach is a thick-walled large muscular sac which lies in the left portion of…
Experiment 1 Aim: To demostrate the action of ptyalin (saliva) on cooked starch. Method: Some…
Genetic traits are determined by genes located on the chromosomes. The sex of an organism…
Man cannot survive without water. The low population densities in the desert natural region is…
A river will cut back and lower the land surface over which it is flowing,…
The water is ever moving round between the atmosphere, the land and sea through a…
The power or energy of a river depends essentially on its volume and its velocity….
A fracture is any break in a bone. There are two kinds of fracture namely…
Neurones are specialized cells that transmit impulses (messages) around the body in form of electrical…
A bone is strong, hard and tough connective tissue mainly made of calcified material. …
In many countries, rivers form the chief highways of commerce and transport. The Yangtze Kiang…
The earth’s crust is far from stable and it is not surprising that in the…
Muscles can be referred to simply as the flesh mostly associated with bones to give…
Transpiration is the loss of water vapour from different parts of the plant shoot. These…
Despite a great variety of coastal features, coastlines may be divided into two basic types….
1) Beaches: Sands and gravels loosened from the land are moved by waves to be…
1) Capes and bays: On exposed coasts, the continual action of waves on rocks of…
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