Muscles can be referred to simply as the flesh mostly associated with bones to...
Month: January 2023
Transpiration is the loss of water vapour from different parts of the plant shoot....
1) Capes and bays: On exposed coasts, the continual action of waves on rocks...
The most powerful agents of marine erosion are waves. Their origin is due to...
The action of the wind passing over a stretch of sea causes waves to...
Fish and tadpoles are aquatic vertebrates. They possess gills for gaseous exchange. Gills...
Planaria is a free-living, flat, slender and small worm. The digestive tract consists of...
Trade is the selling and buying of goods and services between areas and peoples....
The seasonal variation in the volume of water in a river is known as...
Since the earth is spherical in shape, the shortest distance between any two points...
This is the response of plant parts to the stimulus of gravity. Plant shoots...
The eyes are the organs of sight in the higher invertebrates and all vertebrates....
Regional Geography Regional geography is usually defined as the study of the ways in...
Energy/ Power Sources Africa has various sources of energy or power distributed unevenly over...
Africa’s primary economic activities depend essentially on primary activities, which are associated with the...
There are no special excretory organs or systems in plants. The plants as living...
The oxygen needed to oxidize lactic acid to pyruvic acid and from pyruvic acid...
Translocation is the transport of manufactured food substances from the leaves to all parts...
The occurrence of photosynthesis in plants can be shown by experiments. The easiest proof...
There are a number of international organizations in Africa formed with the aim of...
Distribution Some parts of the world experience seasonal winds like land and sea breeze...
Distribution The equatorial, hot, wet climate is found between 5° and 10° north and...
Photosynthesisis the process by which carbohydrates or sugars are manufactured in the green parts...
Distribution The polar type of climate and vegetation is found mainly north of the...
Insolation The only source of energy for the earth’s atmosphere is the sun which...
This is a type of nutrition in which one organism obtains food from another...
Landforms of glaciated lowlands are mainly depositional in nature, brought about by both valley...
Glaciation generally gives rise to erosional features in the highlands and depositional features on...
During the earth’s history, there have been many changes in the pattern of climatic...
Mouth The mouth has a horny covered tongue to facilitate swallowing of food substances...
Mating and laying of eggs The adult male and female mate. The female lays...
1) Temperatures: Coastlands with warm currents offshore tend to have mild climates for their...
The Circulation of the Pacific Ocean The pattern of circulation in the Pacific is...
Let us now study more closely the circulation of ocean currents in the Atlantic...
Ocean currents are large masses of surface water that circulate in regular patterns around...
Like land masses, ocean water varies in temperature from place to place both at...
Within the nucleus of non-dividing cells are strands or string-like structures known as chromosomes....
Almost every known chemical element can be found in varying proportions in the oceans...
The ocean basins are in many ways similar to the land surface. There are...
The oceans occupy more than 70 per cent or 364 million sq km (140...