What's New

• 
  Fatima Ahmed: HI Jubayer, thanks for continuing to participate in our projects. We read your 'Just in Time' essay write up and it was carefully planned and written with a good flow of information and evidence. Nicely written that built up the case in your story. ...  moreHI Jubayer, thanks for continuing to participate in our projects. We read your 'Just in Time' essay write up and it was carefully planned and written with a good flow of information and evidence. Nicely written that built up the case in your story. Good work. Here is your full writing and a screenshot. https://docs.google.com/document/d/1EM9iX7OklZ0lrbEzfw8GTl8fv1Ay1flR/edit?usp=sharing&ouid=106512088825710967320&rtpof=true&sd=true  less

  

  • January 4, 2022
• 
  Jubayer Rahman joined the group Coolinventor Contributors

  • November 22, 2021
• 
  Jubayer Rahman commented on Fatima Ahmed's classified listing.

  

  The Journey of the Ladybug - $7 Science Quiz

  The Journey of the Ladybug
   
  
  I have black dots on my red body. The shape of my body is round or half-sphered. I have six short legs and antennae. You may not know this, but I use my attractive colors and spots to fend of my predators! People call...

  • November 10, 2021

  • Digbijoy Azad likes this.
  • View all 13 comments
  • 
    Tanveer Tausif Ratul To live in a closed eco-system,an animal/plant must need air & foods.While putting the ladybug in the container,some air entered into the container and was trapped inside.
    That air obviously contained some oxygen and CO2.Plants
    need CO2 to live.They...  moreTo live in a closed eco-system,an animal/plant must need air & foods.While putting the ladybug in the container,some air entered into the container and was trapped inside.
    That air obviously contained some oxygen and CO2.Plants
    need CO2 to live.They inhaled the CO2 and exhaled the
    Oxygen.With the Oxygen released by the plants,the ladybug survived and it exhaled CO2.The plants then again used the CO2 and exhaled Oxygen.In this way,it continues in a cycle.
    For making food,plants need 4 things: water,mineral,CO2
    and sunlight.Water and mineral is available in the wet soil.CO2 is available in the air,whereas,sunlight is also saying ‘hi’ there!So?Food prepared!
    Again,the main food of ladybug is small insect called ‘Aphid’,which sucks the juice of plants and live there.So, ladybug is getting enough food for her.This is how they both are surviving in the closed container.  less

    • November 14, 2021
  • 
    Zarin sadaf snigdha Before we answer this question we need to get enlightened on a biological term, symbiosis. Symbiosis means interaction between two dissimilar organism where both benefit from being with each other. When we are putting the ladybug and the plants inside...  moreBefore we answer this question we need to get enlightened on a biological term, symbiosis. Symbiosis means interaction between two dissimilar organism where both benefit from being with each other. When we are putting the ladybug and the plants inside the glass jar they are getting sealed from the rest of the world. The ladybug respires which releases carbon dioxide, which is taken up by the leaves of the plant. The leaves also get sufficient sunlight from the sun as the glass is transparent. And it also gets minerals from the charcoals in the soil ans as the soil was wet plants can absorb water from it too . The plants use this for photosynthesis and to produce oxygen and glucose. The glucose is used by the plants for food and the oxygen is used by the ladybug for respiration. The ladybug also feeds on the plants to survive. This is how the plant and the ladybug depends on each other to survive. This is known as symbiosis and this is why the plant and the ladybug both survived even if the container...    less

    • November 14, 2021
  • 
    sadia islam safa In that container,an small ecosystem was created. Plants produce their own oxygen during photosynthesis and by using that, bug is still alive. Bugs breath through openings in the thorax and abdomen called spiracles. For plants,those gravels will hold...  moreIn that container,an small ecosystem was created. Plants produce their own oxygen during photosynthesis and by using that, bug is still alive. Bugs breath through openings in the thorax and abdomen called spiracles. For plants,those gravels will hold water and increase humidity. Charcoal increases the soils ability to hold onto plant nutrients and from wet soil plants get water. So using all of that in the process of photosynthesis,plant is growing and producing foods,oxygens and heat energy. This is how plants and the ladybug are still surviving in that closed container.  less

    • November 14, 2021
  • 
    Shadman Chowdhury The ladybug and plants inside the closed container can still survive because of photosynthesis. Plants have a process called photosynthesis which requires CO2 and sunlight to produce carbohydrates, water and oxygen for the plants' growth. Those plants...  moreThe ladybug and plants inside the closed container can still survive because of photosynthesis. Plants have a process called photosynthesis which requires CO2 and sunlight to produce carbohydrates, water and oxygen for the plants' growth. Those plants need carbon dioxide to grow (plants absorb carbon dioxide through their stomata). For our container analogy, we can say that the plants inside the container are using photosynthesis to create their own food supply from sunlight and CO2. The gravel supplies nutrients such as nitrogen, magnesium and phosphorus which play important role in plant growth. Charcoal also acts like gravel by keeping up humidity levels for optimum growth conditions. The ladybug eats the plants, but both organisms benefit from receiving nutrients from each other.  less

    • November 14, 2021
  • 
    Digbijoy Azad The ladybug is living in an ecosphere. However, the ladybug is not alone. Bacteria, protozoa, algae, smaller worms, and plants are also crucial members of the jar.
    Few things ladybug needs to live-
    -Oxygen.
    -Food...  moreThe ladybug is living in an ecosphere. However, the ladybug is not alone. Bacteria, protozoa, algae, smaller worms, and plants are also crucial members of the jar.
    Few things ladybug needs to live-
    -Oxygen.
    -Food source.
    -Clean air that does not contain harmful gas like ammonia.
    -Suitable humidity
    -Available water source
    The jer fulfills the requirements like this-
    *Plants and algae give oxygen and get Co2 from ladybugs and other organisms.
    *Plants get energy from the sun and provide food for organisms. The energy stays almost the same as bacteria and protozoa decompose dead organisms and fallen leaves.
    *Bacteria and protozoa break down the waste and make ammonia into nitrate that plants can take. So the air stays clean.
    *Charcoal removes excess humidity.
    *Water evaporates but comes back to the system like rain.
    The jer completes the energy cycle, Co2 cycle, Oxygen Cycle, Hydrogen cycle, decomposition, and controls humidity and air quality. So, Ladybug and her friends can live happily by supporting each other.  less

    • November 14, 2021
• 
  Jubayer Rahman is now friends with Fatima Ahmed.

  • November 1, 2021
• 
  Fatima Ahmed: Hi Jubayer, can you please accept my friend request? Can't message you.

  • October 31, 2021
  • - edited

  • MD Robiul Islam Rajon likes this.
  • 
    Jubayer Rahman Sorry for being late. I have accepted your friend request.

    • November 1, 2021
• 
  Fatima Ahmed: Thanks to Jubayer for submitting his first English writing in our site on dolphins and drones. His writing captured the main concept of our project: echolocation. This was his first time writing in our site and he did pretty well. Keep up the good work!...  moreThanks to Jubayer for submitting his first English writing in our site on dolphins and drones. His writing captured the main concept of our project: echolocation. This was his first time writing in our site and he did pretty well. Keep up the good work! You can see his full writing in this link and here is a screenshot: https://docs.google.com/document/d/1T6U36JR6b-Tl8KKGfEQtiMCJRCE103zB/edit?usp=sharing&ouid=106512088825710967320&rtpof=true&sd=true  less

  

  • October 30, 2021
• 
  Jubayer Rahman has just signed up. Say hello!

  • October 5, 2021