Challengers Zone Learning

TODAY'S TIP 2/7/2022
What is an alloy?
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QUESTION TIME. 14-04-2022
Today is the day Jesus Christ was crucified, but why do you think is called Good Friday?
Share your opinions.

HAPPY GOOD FRIDAY TO YOU ALL!!!
Today is Good Friday, the day we remember the crucifixion of Christ Jesus.
May the sacrifice of Lord Jesus infuse your life with inspiration and new hope to follow the path of truth and redemption.
BY CHALLENGERS

ECOSYSTEM.
It is a self contained system of interdependent organisms and their physical environment.

Components of an Ecosystem

a) Biotic (biological components)

Ø living organisms like plants and animals

b) Abiotic(physical factor)non living

Ø Air ,water ,soil ,rocks ,and mineral salts

Definition of Terms

1. Habitat

Ø A place where organisms live e.g. wood, land, forest, a pond, a plantation.

2. Niche

Ø The role in which an organism plays in the habitat.

3. Species diversity

Ø A variety of organism occupying different niches

Ø A high species diversity makes for a stable ecosystem in that there will always be some organisms that are able to survive natural disasters.

4. S**t analysis

Ø Is getting information about organisms in an area by looking at their droppings.

Ø A closer look at droppings can give you information such as diet of the animals that is whether it’s a carnivore, herbivore or an omnivore.

5. Biomass

Ø Is the total living mass of organisms in an area

6. Litter mass

Ø Is the dead organic matter found on the surface of the soil

7. Basal cover

Ø Is the portion of ground covered by plants basis on the soil surface

DEFINITION OF PHYSICAL AND CHEMICAL CHANGE.
Physical and chemical changes

Physical changes: - these are changes in the physical properties (size, shape, density) or state of matter without a change in composition. No new substances are formed during physical changes. As water changes from liquid to ice, its appearance changes but its chemical composition remains the same. If we heat platinum wire in a burner flame, the wire will become red hot. It returns to its original; silvery metallic form after cooling. The platinum undergoes a physical change while under the flame but its composition remains the same under both conditions.

Chemical changes: - these are changes to the chemical composition of a product and a new substance is formed with entirely different composition from the original material. If a clean copper wire is heated in a burner flame, a change in appearance is noted when it cools. The copper no longer has its characteristic color, but now appears black. The black material is copper ii oxide.

Which element in the radioactive form is used for determining the age of artifacts, relics, bones and many more of the past?
WHAT DO YOU KNOW??
Comment with your answer. 19/3/2022

THE CIRCULATORY SYSTEM.
The circulatory system, also called the cardiovascular system, is an organ system that permits blood to circulate and transport nutrients (such as amino acids and electrolytes), oxygen, carbon dioxide, hormones, and blood cells to and from cells in the body to nourish it and help to fight diseases, stabilize body temperature and pH, and to maintain homeostasis.
The circulatory system helps in discharging waste products. Functions of the circulatory System

The following are some of the functions of a human transport system.

To transport food nutrients from the digestive system to all cells
To transport oxygen from the lungs to the cells.
To remove wastes such as urea and uric acid from the liver to the kidneys
To remove carbon dioxide from the cells to the lungs.
To carry hormones around the body
Distribution of heat around the body for temperature control
Components of the circulatory system.

The Circulatory system is made up of three major components;

1.The blood
Blood vessels
The heart.

Notification, Notification, Notification
There will be the introduction of facts everyday commencing from 14th February 2022.

Merry Christmas and Happy New Year.

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CHALLENGERS ZONE LEARNING TV QUESTION FOR THE DAY.
1. A+A+A=60
2. A+B+B=26
3. B+C+C=15
4. A+B*C=?