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To apply conceptual knowledge, to arrive at conclusions and to dare make predictions

Natural sciences

Life and way of living

Educator section

Memorandum

1. Each organism is adapted for a particular way of life. In this way many organisms are able to live together without having to compete for food

2. Organisms are changing continually in an effort to improve their adaptation to the environment.

3. Changes in the environment.

4. The temperature is rising.

5. No. Some will probably become extinct.

6. They will have to adapt to the changes. Their ability to adapt will depend on the degree and tempo of changes in the environment.

The extinction of the dinosaurs: Discuss drastic changes such as the arrival of the ice age with the learners and mention the speed with which it occurred, etc. Encourage them to collect information and to bring it to the class.

Human beings can contribute to it through disruption of the natural balance, e.g. by destroying forests, pollution, and extermination of particular animal species.

Leaner section

Content

Activity 13: to apply conceptual knowledge, to arrive at conclusions and to dare make predictions [lo 2.3, lo 2.4]

Diversity and change

You now know that a large variety of plants and animals occur in ecosystems. Try to answer the following questions:

1. Why is there a variety (diversity) of plants and animals (why do plants differ from one another and why do animals differ from one another)?

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2. Will the plants and animals that are alive today remain unchanged forever or will they gradually change? Explain your answer.

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3. What causes plants and animals to change?

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4. Name one non-living factor that currently is busy changing and that eventually will cause the nature of ecosystems all over the world to change.

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Questions & Answers

what is mutation
Janga Reply
what is a cell
Sifune Reply
how is urine form
Sifune
what is antagonism?
mahase Reply
classification of plants, gymnosperm features.
Linsy Reply
what is the features of gymnosperm
Linsy
how many types of solid did we have
Samuel Reply
what is an ionic bond
Samuel
What is Atoms
Daprince Reply
what is fallopian tube
Merolyn
what is bladder
Merolyn
what's bulbourethral gland
Eduek Reply
urine is formed in the nephron of the renal medulla in the kidney. It starts from filtration, then selective reabsorption and finally secretion
onuoha Reply
State the evolution relation and relevance between endoplasmic reticulum and cytoskeleton as it relates to cell.
Jeremiah
what is heart
Konadu Reply
how is urine formed in human
Konadu
how is urine formed in human
Rahma
what is the diference between a cavity and a canal
Pelagie Reply
what is the causative agent of malaria
Diamond
malaria is caused by an insect called mosquito.
Naomi
Malaria is cause by female anopheles mosquito
Isaac
Malaria is caused by plasmodium Female anopheles mosquitoe is d carrier
Olalekan
a canal is more needed in a root but a cavity is a bad effect
Commander
what are pathogens
Don Reply
In biology, a pathogen (Greek: πάθος pathos "suffering", "passion" and -γενής -genēs "producer of") in the oldest and broadest sense, is anything that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a germ. The term pathogen came into use in the 1880s.[1][2
Zainab
A virus
Commander
Definition of respiration
Muhsin Reply
respiration is the process in which we breath in oxygen and breath out carbon dioxide
Achor
how are lungs work
Commander
where does digestion begins
Achiri Reply
in the mouth
EZEKIEL
what are the functions of follicle stimulating harmones?
Rashima Reply
stimulates the follicle to release the mature ovum into the oviduct
Davonte
what are the functions of Endocrine and pituitary gland
Chinaza
endocrine secrete hormone and regulate body process
Achor
while pituitary gland is an example of endocrine system and it's found in the Brain
Achor
what's biology?
Egbodo Reply
Biology is the study of living organisms, divided into many specialized field that cover their morphology, physiology,anatomy, behaviour,origin and distribution.
Lisah
biology is the study of life.
Alfreda
Biology is the study of how living organisms live and survive in a specific environment
Sifune
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Source:  OpenStax, Natural sciences grade 7. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11077/1.1
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