Relations among components of ecosystem and Food Chains
Green plants and trees that synthesize their own food are called as Autotrophs.Others who depend on them are called as Heterotrophs.
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Ecosystem and its components
The total area where living beings are found is called as biosphere. It can be divided into many small independent units called as Ecosystem. In fact, the unit of biosphere which incorporates many types of microorganisms, plants and animals, physical factors like soil, water, air etc. interacting among themselves is called as ecosystem
Evidences of evolution of life
Studies and researches that are done in different fields from time to time show increasing complexities in organisms than their ancestors. These studies and evidences show many important evidences of organic evolution.
Pollution due to Burning of Fire Crackers
Deepawali is the time of functions. This is the time when we meet with our friends and relatives. The atmosphere of love and recreation remains all around at this time. But we never think that we forget certain other important things at this time.
The Danger of Extinction of Ten Lac Species during this Century
These birds used to fly in and around our houses about some decades ago. But these birds are very rarely seen in our surroundings.
Determination of sex in living organisms
Determining male or female form of living organism through sexual reproduction is called as sex determination. Sex determination on a large scale is of two types- environmental, genetic and chromosome based.
Communities dependent on animals
Man has been keeping animals and depending on them for his livelihood since the origin of civilization. Washermen have been depending on donkeys since long for carrying clothes.
Human Attitudes to Animals
Humans have a complex relationship with animals. They use them for a variety of purposes. There are working animals, companion animals, animals used for scientific research, and animals used for food and byproducts.
Vertebrates and Their Key Characteristics
According to their physical make up, there are basically two types of animals- Vertebrates and invertebrates. Invertebrates are those animals that don’t have a vertebral column or backbone. On the other hand, Vertebrates are those animals who have a vertebral column or the back bone.
Sexual Reproduction in Animals
Great diversities are found in terms of sexual reproduction among animals.