Good day my dear hive friends, last topic we learned about parts of microscope. Today, we will discuss the biological Relations of plants and animals.
As we know, plants and animals have a great responsibilities and contribution in our ecosystem and or nature. Let me share to you my experimental since when I was in college.
We examined the related topics above. We made a balanced aquarium contains green living plants just like weeds, water hyacinth and other marine plants. Also live fish and other forms of Life.

![IMG_20210607_105636.jpg](https://images.hive.blog/DQmf4j7XHTQ4WFNNVTvGt2J3UVZEE4zqiDGpgjoc97cZJnw/IMG_20210607_105636.jpg)
We put all in one aquarium to oberve their relationship between them. As I watched and observed the animals to see if they are feeding, I observed them carefully. They are eating the living green plants. I also observed that the fishes are continuesly opening their mouth is if biting. The fishes are taking in oxygen that were dissolved in water. When the aquarium was placed in the sunlight, oxygen was given of by the time plants which is useful to animals in order to live.
Contents:
PLANTS
Income from:
➡️ Oxygen is released from the plants.
Outcome/out go to:
➡️Carbon dioxide is taken in by the plants.

ANIMALS
Income from:
➡️Carbon dioxide is released from the animals.
Out go to:
Oxygen is taken in by the animals.

To understand the carbon and oxygen cycle, I have made a diagram of the related topics.
![IMG_20210607_114524.jpg](https://images.hive.blog/DQmWLtmFc88TvkZxrHEx5YHAiKa58zQDQthSDVwDjJAbb2r/IMG_20210607_114524.jpg)
For Carbon cycle:
➡️The plants in the aquarium are eaten by the fish thus obtaining carbohydrates foods containing carbon.
Due to the oxidation, the carbohydrates food is carbon dioxide is released by the fish.
Carbon dioxide is then taken by the plants in the manufacturer of carbohydrates foods.

For oxygen cycles:
➡️Oxygen dissloved in water is taken by the fish. 
This is then released in the form of carbon dioxide. Carbon dioxide then is taken in by the plants and use it n starch making or photosynthesis.
Plants are able to store up energy in the process of food making called photosynthesis. Plants are able to manufacture food by the help or aid of the hea, moisture, sunlight and raw materials and give off oxygen.