best 6th grade science

The 6 th period consists of elements that have atomic numbers 58 to 71. They are called Lanthanides. The 7 th period consists of elements that have atomic numbers 90 to 105. They are called Actinides. Both of them are called inner transition elements. Lanthanides an..

Metals are good conductors because they have free electrons. Silver and copper are the two best conductors of heat and electricity. Lead is the poorest conductor of heat. Bismuth, mercury and iron are also poor conducto..

For breeding to start, the female should be 14-18 months and the male should be 2 yrs of age. For effective breeding it is important to select ewes and ram or goats that are best suited for local conditions. Different breeds are known for the quality of wool and meat yield. Improvement in..

Question: Which of the following soil is the best for plant growth? 1. Sandy soil 2. Clay 3. Gravel 4. Loamy soil Answer: ..

Reproduction is defined as the production of individuals of the same species, that is the next generation of the species. While it is one of the fundamental characteristics of living things, it is not an essential life process. An individual can live without reproducing, but, a species cannot surv..

Question: Snoring can be best described as __________. 1. forceful sudden expiration 2. jerky incomplete inspiration 3. vibration of the soft palate during breathing while sleeping 4. sound sleep Answer: ..

Introduction - Reproduction is defined as the production of individuals of the same species, that is the next generation of the species. While it is one of the fundamental characteristics of living things, it is not an essential life process. An individual can live without reproducing, but, a speci..

Variations, the raw materials for evolutionary change, are controlled by genes. When there is an error in DNA copying during sexual reproduction it leads to variation. Variations occur due to microevolution, that is, evolution on a small scale-within a species or a single population. It is defined..

Nutrients - Food contains various organic and inorganic substances. Those which are required by the organisms to carry out life functions are called nutrients. Nutrients are of various types - carbohydrates, fats, proteins, vitamins and minerals. energy production synthesis of materials for growth ..

New species can be created by domesticated animal husbandry for better and yield. For example, a new species of domestic sheep were created by hybridisation that no longer produced viable offspring with the parent species. Domestic cattle on the other hand, with several varieties such as jersey, h..