Every day we encounter the plant world, be it in parks, wild places of nature, gardens, vegetable gardens, on the street and even in our homes. But do we really understand the vital role of plants for humans and nature as a whole? The very thought of this should make us pay more attention to the beautiful vegetation that surrounds us. Let's look at the 7 main beneficial qualities of plants, without which our life would not be possible.
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FOOD
We eat plants to obtain the energy stored in their cells. Our ancestors also used plants as a source of food. They began to learn farming techniques to make their lives easier and grew plants that provided them with food. About 7,000 different plant species have been cultivated and used for human food. Although humans can live off animal products, this does not reduce our dependence on plants since cows, pigs, sheep, chickens, rabbits and many other animals eat plant foods.
Essay on the topic “Protecting plants, protecting life”
An essay on the topic “By protecting plants, we protect life.” What to write in an essay Protecting plants, protecting life?
What arguments and theses are suitable for an essay on the topic “Protecting plants, protecting life”? 2021 is the year of plant health, so you need to write a short text or essay on this topic. Task level 6th grade.
All plants play the greatest role in the life of the entire planet Earth. The most important role is to provide oxygen to all living organisms, including humans. If there were no plants, there would be no life on Earth. For some, for example, for many insects and animals, plants are the main source of food.
Therefore, it is so important to take care of the preservation of vegetation. Do not cut down trees and bushes, do not allow fires to occur, which sometimes destroy everything in their path, protect rare plant species. Perhaps today we do not need plants as much as it might seem (although in this case we should remember the exhaust from cars and industrial enterprises, which plants are actively fighting), but we should also think about other living organisms, as well as subsequent generations of people.
Plants restore oxygen in the atmosphere by consuming carbon dioxide, while humans and animals consume oxygen. The fact that there is more carbon dioxide in the atmosphere occurs for four main reasons: 1) the combustion of many types of fuel; 2) deforestation; 3) forest fires; 4) an increase in the number of people on Earth. Carbon dioxide is a gas that is exhaled by humans and animals.
In order for people and animals to have something to breathe, people must ensure that new plants are planted to restore losses from fires and deforestation. In addition, people make sure that some plant species do not disappear; people have created the “Red Book”, where some plants and some animals are listed.
Examples of such plants are: snowdrop, violet violet, boxwood, ginseng. Reserve zones are also being created. If people have lit a fire in a clearing in the forest to relax, then before going home they need to fill the fire with water. If there is more and more carbon dioxide in the atmosphere, then the Earth may overheat.
Essay plan:
- How is carbon dioxide beneficial for plants?
- Why are there fewer forests on Earth?
- Why is there more carbon dioxide in the air, and how does this gas harm everyone?
- Why do people plant new trees and bushes, and create nature reserves?
- What do you know about the “red book”, give examples of plants from the red book?
- How can tourists who lit a fire in a clearing in the forest prevent a forest fire?
All plants play a very important role in human life. After all, if there are no plants, then there will be no one to supply our air with oxygen and remove carbon dioxide from it. This is so clear, and yet people cut down forests, poison the water and air with waste, and shorten their own lives.
Almost every year my parents and I help foresters plant tree seedlings in the forest. It’s hard to see when black bald spots appear on the site of a forest with beautiful and lush vegetation due to poachers’ logging or fire.
People must all work together to protect the plant world. Even a broken poplar branch in the park causes damage not only to nature, but also to man himself. People, be reasonable, take care of nature!
Plants are living organisms. People grow them for their own benefit, but they cannot just be thoughtlessly destroyed. After all, they are the ones who produce oxygen, which is necessary for other living beings, including humans. That is why by protecting plants, we protect our lives and our health.
Many plants are medicinal, they can cure dangerous diseases, thereby they also protect our lives.
Forests, meadows, fields - all these are habitats for animals. If plants disappear, then many representatives of the fauna will have nothing to eat, herbivores will simply die, followed by carnivores. Without plants, animals cannot exist at all.
Plants are also a source of energy. After all, peat and coal are formed from them; there are specially grown energy willow and poplar, which are used for fuel. Without energy (heat and light), humanity cannot exist. Plants are renewable energy.
Plants can also save a person from melancholy and depression. They bring joy and help express their feelings. This is also important for people: to live in a beautiful apartment, a beautiful city, to create - to create something from plant material: compositions, crafts, paintings, baskets, furniture and much more. And plants are paper, try it, imagine life without it. This is impossible even with modern gadgets.
AIR
The air we breathe is mainly composed of 78% nitrogen and 21% oxygen. But it is oxygen that is vital for our cells to produce energy. During photosynthesis, plants absorb sunlight and carbon dioxide to produce energy and release oxygen into the atmosphere as a byproduct of their metabolism. We, in turn, inhale oxygen, which is vital for us, and exhale carbon dioxide, which is necessary for plants. Take a deep breath of oxygen-rich air and realize that we are alive thanks to plants.
Photosynthesis: how do plants eat?
The source of energy for all living beings is food. But have you ever seen plants munching on pizza or enjoying their porridge in the morning? Of course not! You already know that plants eat in a different way, called photosynthesis.
What is photosynthesis?
Photosynthesis is the production of nutrients by green plants using energy from the sun. But in addition to solar energy, plants also need carbon dioxide, which they convert into oxygen. With every breath of a person or animal, the oxygen content in the atmosphere decreases, but plants constantly replenish its reserves through photosynthesis. This cycle repeats itself over and over again. Without photosynthesis, plant life is impossible, and without plants, animals would not exist.
Photosynthesis
On the other hand, there is not much carbon dioxide in the air. However, its reserves are constantly replenished not only by all living creatures that emit it during breathing, but also by industrial enterprises and cars, which emit huge amounts of carbon dioxide into the atmosphere every hour.
Importance of solar energy
The energy emitted by the Sun performs two very important functions for all living things. Thermal energy warms the Earth, thereby preserving and maintaining the temperature regime necessary for life, and light energy provides photosynthesis. All life on Earth is powered by solar energy, converted by plants into a usable form. Herbivores eat plants, thereby receiving the energy of the Sun, and predators, eating herbivores, are also filled with its energy. Man is also present in this chain. We get energy from the food we eat. Every apple, carrot or piece of meat we eat provides us with the energy of the Sun.
Where and how does photosynthesis occur?
Plant photosynthesis occurs in chloroplasts, which are contained in the cells of fruits and stems, but the largest number of them is found in the leaves. Chloroplasts contain a special substance - chlorophyll. It captures streams of sunlight and processes water and carbon dioxide into organic substances, while releasing oxygen into the atmosphere.
For quite a long time, scientists could not explain the mechanism of this process. Initially, they believed that plants received all the necessary nutrients from the soil. However, after a series of experiments, it was concluded that roots are not the only organ that ensures the life of plants.
The merit of photosynthesis is that thanks to it, there are a huge number of plants on our planet that prevent the Earth from turning into a dead desert.
Why do the leaves of deciduous trees change color in autumn?
In spring and summer, the leaves on trees are green due to the presence of chlorophyll. During the summer, leaves absorb sunlight and use its energy to form nutrients, i.e. actively participate in the process of photosynthesis. With the onset of autumn, trees begin to prepare for winter.
How do they do this?
Basically, the preparation process consists in the fact that nutrients from the leaves gradually move to the branches, then to the trunk and root, where they remain during the winter cold. Thus, in the fall, vital activity in the leaf gradually fades away, and chlorophyll is partially destroyed. When the temperature drops, chlorophyll is replaced by pigments of other colors: yellow, red, orange, dark cherry and many others.
Exception plants
Podjelnik
As with any rule, there are exceptions to the process of photosynthesis. For example, the plant - a white plant without leaves - does without sunlight and, accordingly, photosynthesis. Podelnik parasitizes other plants due to microscopic fungi, i.e. receives nutrition both from them and from plants into whose roots these fungi have penetrated.
Photosynthesis in the animal world
sea slug
As it turned out, one of the few animals that can carry out photosynthesis is the sea slug. But he does this in an unusual way. The slug feeds on algae, but does not completely digest it. Photosynthesis occurs in the undigested remains of algae, but already in the liver of the sea slug. Consequently, this mollusk lives on glucose obtained from seaweed.
MEDICINE
Many medicines are made from plant extracts or synthesized plant compounds. Aspirin is obtained from willow bark. Mint leaves contain mentha, which is used in throat lozenges, muscle ointments and nasal remedies. Quinine from the bark of the cinchona tree is part of the anti-malaria medicine. According to the World Health Organization, approximately 65–80% of the world's population uses plant medicine as a primary form of healthcare.
Essay on the topic: “Let’s worship kindness...”
Today it is impossible to open a newspaper and not find an article about yet another murder, rape or fight. Every year crime is growing more and more. People are angry and hostile to each other. But I believe that even the most evil person has at least a grain of good feelings in his heart, and very rarely, but still, truly kind people can be found in our time. But it is very difficult for such people to live, because they are not understood, and are often despised and try to deceive or humiliate them in some way. Read more…
HEALTH
Photo: Frank Richards
The introduction of green technologies into various areas of our lives shows that society understands the value of including natural components in the human-made environment for psychological and physical health. Plants around us promote health, happiness, awareness and productivity. Living plants placed in living or working spaces freshen the air, control humidity, reduce stress levels and improve people's overall well-being.
HABITAT AND CLOTHING
Plants form the basis of Earth's diverse landscapes, providing hundreds of unique habitats essential to millions of species of animals and other organisms. Meadow flowers and grass sway in the wind. Trees dominate their habitat and are the dynamic lungs of the Earth, supporting life everywhere. Birds collect twigs, leaves, bark and other objects to create a cozy nest in a tree, bush or even in tall grass. Our ancestors used thatched roofs made from grass, reeds or palm leaves to protect their homes. Industrial hemp was one of the first plants to be used to produce fibers for clothing, 10,000 years ago. Plants, in all their diversity, support a continuous life cycle on our planet.
CLIMATE
Excessive release of carbon into the environment is responsible for the current climate change we are facing. But not everyone knows that plants accumulate carbon by capturing it from the air. Plants help keep most of the carbon dioxide produced by burning fossil fuels out of the atmosphere. We owe our temperate climate to the green landscape that covers our world.
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What other benefits do plants provide to nature?
The rate of photosynthesis depends on light intensity, oxygen and carbon dioxide concentrations, and ambient temperature. The resulting O2 is partially released into the atmosphere, and partially goes into the respiration of the plants themselves. Every year, plants release up to 510 tons of oxygen into the atmosphere; they maintain its constant gas balance to a state suitable for breathing. Rising to the upper layers of the atmosphere, oxygen turns into ozone and becomes part of the ozone layer, which protects our planet from the harmful UV radiation of the Sun.
Every year, plants produce up to 170 billion tons of organic matter, most of which is produced by terrestrial plants. With the help of plants, the upper fertile layer of the Earth, called soil, is formed; they provide it with a constant circulation of minerals, which is so necessary for its fertility.
Plants, due to the fact that they return 90% of the moisture that land evaporates into the atmosphere, significantly soften the Earth's climate and shape the temperature regime of the planet. By absorbing carbon dioxide, they reduce the so-called greenhouse effect, although humans, as a result of their economic activities (burning fuel and cutting down large areas of moist equatorial forests), are trying to reduce all the efforts of the “lungs of the planet” to zero.
Vegetation, covering the ground with a dense carpet, protects it from drying out, creates a milder, humid climate, roots keep the soil from weathering and erosion, and prevent the appearance of ravines and landslides. Plants release specific substances, phytoncides, into the air, which are destructive to pathogenic bacteria and are the first important step in the trophic food chain.
