Effects of Environment on the Life Cycle of Organisms

Effects of Environment on the Life Cycle of Organisms

by Steve John Mart M. Jose

​Teacher III

Most Essential Learning Competency (MELC): Describe the effect of the environment in the life cycle of organisms. S4LT-IIg-h-14

Learning Objectives:

1. Describe the effects of the environment on the life cycle of organisms.

2. Identify the conditions of the environment that affect the life cycle of living things.

3. Enumerate ways on how to prevent the harmful effects of the environment on living things.

GETTING TO KNOW THE LESSON!

Multiple Choice

1. Which of the following activities can help conserve the environment?

• building landfills

• mining

• cutting down trees

• planting trees

Multiple Choice

2. What makes our air polluted?

• Application of commercial fertilizers in crops

• Burning of gasoline and diesel.

• Cutting of trees in the forests

• Use of electric appliances at home

Multiple Choice

3. In what way air pollution affects the plants?

• Makes food for the plant

• Protects the plants from being eaten by the animals

• Slow down the growth of the plants

• Source of organic fertilizer for the plants

Multiple Choice

4. Which of the following is an air pollutant?

• carbon dioxide

• oxygen

• nitrogen

• sulfur dioxide

Multiple Choice

5. Which of the following will NOT happen when earth gets warm?

• Ice beds found on polar areas melt faster.

• The homes of polar bears and other animals are destroyed.

• The regular breeding patterns of animals are disturbed.

• There would be abundant supply of food and water.

Effects of Environment on the Life Cycle of Organisms

​Living things can survive only in environments that sustain their needs. Humans, animals, and plants live in different environments with different environmental conditions. This includes air, water, soil, sunlight and predators that present challenges to the organisms living in that environment. Organisms have to exhibit adaptations for survival. Changes in an organism’s environment may affect the existence and life cycles of living things.

Describe the two pictures.​

Would you like to have an environment like this?

How do environmental changes and human activities such as deforestation; illegal logging, and kaingin, affect the life cycle of organisms?

Who do you think is responsible for these activities?

What do may happen if these human activities and practices persist?

​ Human activities like deforestation, illegal logging, or kaingin destroy places where these organisms live. Such activities may result to shortage of food resources that can cause animals and plants to perish.

Pollution releases chemical that are harmful to humans, animals and plants. Polluted areas are breeding places for organisms that carry diseases. Plants will not grow healthy and strong in contaminated soil.

The actual gas or substance that causes air pollution is called a pollutant. Here are some of the major pollutants:

​Sulfur dioxide - One of the more dangerous pollutants, sulfur dioxide (SO2) can be generated by burning coal or oil. It can cause acid rain as well as respiratory illnesses like asthma.

Carbon dioxide - Humans and animals breathe out carbon dioxide (CO2). It is also released when fossil fuels are burned. Carbon dioxide is a greenhouse gas.

Carbon monoxide - This gas is very dangerous. It is odorless and is produced by cars. You can die if you breathe too much of this gas. This is one reason why you should never leave your car running in the garage.

Chlorofluorocarbons - These chemicals are also called CFCs. They were used in many devices from refrigerators to spray cans. They are not used as much today but caused significant damage to ozone layer during the time they were heavily used.

Particulate matter - These are tiny particles like dust that get into the atmosphere and make the air we breathe dirty. They are linked to diseases like lung cancer.

Too much use of pesticides and aerosols kills insects. These insects such as bees and butterflies are pollinators and are essential in the life cycle of plants. Without plants, humans and animals will not survive.

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Illegal killing, trapping, or capturing of animals is Poaching. Animals, like elephants, rhinoceros, and tigers are poached and hunted for commercial purposes. These animals will reduce in number and may go extinct.

​

Climate change and global warming affect living things. Abrupt changes in the temperature may result to dizziness or even heat stroke.

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When Earth gets warm, ice beds found on polar areas melt faster. The homes of polar bears and other animals are destroyed, and their regular breeding patterns are disturbed.

​Guide Questions:

​

1. What is pollution?

2. What human activities create pollution?

3. What are the effects of pollution to humans, animals, and plants?

4. Explain how pollution affects the organisms living in an ecosystem.

​Below are pictures of different environments. Study carefully the pictures and identify the factors that are present in a healthy environment and in a polluted environment. Complete the statement below.

​Below are pictures of different environments. Study carefully the pictures and identify the factors that are present in a healthy environment and in a polluted environment. Complete the statement below.

LET'S CHECK YOUR UNDERSTANDING!

​Identify the following pictures. Arrange the scrambled letters to form the correct word.

Fill in the Blanks

Fill in the Blanks

Fill in the Blanks

Multiple Choice

The following could be a cause of environmental change that has an adverse effect on the life cycle of organisms EXCEPT one. Which one is it?

• deforestation

• reforestation

• forest fire

• volcanic eruption

Multiple Choice

The use of pesticides and aerosols kill insects like bees and butterflies. What is the role of these insects in the life cycle of plants?

• parasites

• pollinators

• pests

• prey

Multiple Choice

Which of the following is the possible effect of climate change and global warming in the life cycle of organisms?

• extinction

• overpopulation

• maturation

• reproduction

Multiple Choice

Poaching is the illegal killing, trapping, or capturing of animals. Which of the following animal are often poached?

• cat, dog and goat

• cow, carabao and horse

• elephants, rhinoceros and tigers

• turtle, pig and rooster

Multiple Choice

The following are human activities that destroy places where organisms live EXCEPT:

• A.deforestation

• kaingin

• illegal logging

• reforestation

Multiple Choice

Smiley face if the activity involves saving the earth and a sad face if the activity does not.

1. composting organic wastes

Multiple Choice

Smiley face if the activity involves saving the earth and a sad face if the activity does not.

2. burning of leaves

Multiple Choice

Smiley face if the activity involves saving the earth and a sad face if the activity does not.

3. driving smoke belching vehicles

Multiple Choice

Smiley face if the activity involves saving the earth and a sad face if the activity does not.

4. riding bicycles

Multiple Choice

Smiley face if the activity involves saving the earth and a sad face if the activity does not.

5. kaingin system

​TOPIC: Effects of the Environment on the Life Cycle of Organisms

​OBJECTIVE: Show the effects of the environment on the life cycle of organisms.

​SITUATION: The Rufous-headed hornbill is a Critically Endangered bird living in the rainforests on the islands of Negros and Panay in the Philippines. A critically endangered (CR) species is one that has been categorized by the International Union for Conservation of Nature (IUCN) as facing an extremely high risk of extinction in the wild.

SUMMATIVE ASSESSMENT WEEK 6

You will act as an animal protector by making an announcement (blog post) to show how the environment affects the extinction of this animal. In this way you are also encouraging everyone to do their part to protect other organisms.

SUMMATIVE ASSESSMENT WEEK 6