A. Objective The learners should be able to investigate changes that happen in the absence of oxygen. B. Materials ● fire. Activity: TITLE: ABSENCE OF OXYGEN Jar with cover (Jar A) Jar without cover (Jar B) 2 same sized candle (small) Match or lighter Timer Ruler C. Precautionary Measure Remember to handle match or lighter carefully and don't play with it for it can cause D. Procedure 1. Label the jar with cover with Jar A and the jar without cover as Jar B. 2. Light the candles with a match and put the candles in each jar. 3. Record the time when the candles are lighted and the time when the light was put off. 4. Cover the Jar A and observe what will happen. 5. Measure the length of the candles after the flame was put off. 6. Record your findings on the chart below. Jars JAR A JAR B Time of the flame was put off Length of the candle after burning Answer the following questions: 1. Which of the 2 jars was the candle's flame put off first? 2. Which of the two candles has the shortest size? 3. What happen, when you cover the Jar A? 4. When the lighted candle in Jar A was covered, the flame was put off, what is the reason why the candle's flame did not continue to burn? 5. What are the 3 main components in combustion? Doss​

How different was the lifestyle of early humans compared to us now?​.

Answer:

The lifestyle of early humans was significantly different compared to our modern lifestyle today. Here are some key differences:

1. Hunter-Gatherer Society: Early humans lived as hunter-gatherers, relying on hunting animals and gathering wild plants for their food. They were nomadic, constantly moving in search of food sources. In contrast, our modern lifestyle is predominantly agricultural and industrial, with most people relying on farming or other forms of food production and living in settled communities.

2. Technology and Tools: Early humans had limited technology and tools compared to our advanced technological society today. They used simple tools made of stone, wood, and bone for hunting, gathering, and making shelters. In contrast, we now have sophisticated technology and tools that have revolutionized various aspects of our lives, including communication, transportation, and medicine.

3. Shelter and Living Conditions: Early humans lived in temporary shelters, such as caves or makeshift structures made of branches and animal hides. They were exposed to the elements and faced constant challenges in finding suitable shelter. In contrast, we now have permanent homes with advanced infrastructure, providing us with comfort, safety, and protection from the environment.

4. Social Structure: Early humans lived in small groups or tribes, with a simpler social structure. They relied on cooperation and communal living for survival. In contrast, our modern society is much more complex, with larger populations, diverse social structures, and various systems of governance and organization.

5. Communication and Language: Early humans communicated using early forms of language, gestures, and symbols. Their communication was primarily face-to-face and limited to their immediate community. In contrast, we now have advanced written and spoken languages, as well as various forms of long-distance communication, such as telephones, internet, and social media, allowing us to connect and communicate with people around the world.

6. Cultural and Intellectual Development: Early humans had a limited understanding of the world around them and relied heavily on instinct and survival skills. Our modern lifestyle is characterized by significant cultural and intellectual development, including art, literature, science, and technology. We have accumulated knowledge and have the ability to build upon the discoveries and innovations of previous generations.

Overall, the lifestyle of early humans was shaped by their immediate environment and the need for survival, while our modern lifestyle is influenced by technological advancements, complex social structures, and cultural development. The differences between early humans and us today highlight the significant progress and changes that have occurred over time.