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​

what is difference between insemination and sex ? ​

Answer:

In general, artificial insemination (AI) has better success rates than directed intercourse. Specifically, AI has a 13-25% chance of pregnancy when conjugal sperm is used and 18-29% in cases where a sperm donor is used.

Insemination and sexual intercourse (sex) are two different methods of reproduction and have distinct characteristics:

1. Insemination:
- Insemination refers to the process of introducing sperm into a female's reproductive tract without sexual intercourse.
- It can be done through artificial insemination, where sperm is collected and introduced into the female's reproductive system through medical procedures.
- Insemination can also occur naturally in some species, such as in animals where artificial methods are not involved.
- It is often used in human fertility treatments when there are difficulties with natural conception.

2. Sexual Intercourse (Sex):
- Sexual intercourse, commonly referred to as "sex," is a natural and intimate act between two individuals, typically for pleasure and reproduction.
- During sexual intercourse, sperm is naturally introduced into the female's reproductive tract when ejaculation occurs.
- It is the most common method of reproduction in humans and many other species.
- Besides reproduction, sexual intercourse plays a significant role in human relationships and emotional bonding.

In summary, insemination involves the artificial or natural introduction of sperm into the female reproductive tract, while sexual intercourse is a natural, intimate act that can lead to reproduction and serves various other emotional and relational purposes in humans.

Hopefully this helps!