The Wigwam was generally used as a shelter by the Native Indian Tribes who lived around the Great Lakes and the East Coast who had access to birch bark from the abundant forests and woodlands in their territories to enable them to build their wigwams. ... If a wigwam frame was not available, they would make a new one. Wigwams were used for shelter. They were places where families gathered to socialize, eat and sleep. Although the size differed depending on the family and community, these family dwellings could hold up to 10 or 12 people. Wigwams could also be used as houses of worship or for community meeting places.

A mud house is building construction that makes use of soil excavated from the land where the house is built. This soil is enhanced by natural additives that are locally available like rice husk, paddy straw, etc. During summer heat wont be able to get into the house. Mud and clay cool the house. The houses in rural areas are built with bricks and mud so as to keep the houses warm in winters and cool in summers. Since these materials are poor conductors of heat, they do not allow heat to pass through them easily. Rain drains into the mud house and can degenerate it.

Pucca housing (or pukka or pacca) refers to dwellings that are designed to be solid and permanent. This term is applied to housing in South Asia built of substantial material such as stone, brick, cement, concrete, or timber. The term pucca means "solid" and "permanent" .

• Advantages.
• 1. It is permanent.
• 2. It will last for many years.
• 3. It will be not destroyed by huge winds.
• Disadvantages.
• 1. It will be very hot.
• 2. Sometimes the concrete will be broken.
• 3. Sometimes water will leak.

In ancient times, stone houses are built for a stronger fortress against natural calamities and from human invaders. In fact, the Knap of Howar is one of the oldest houses made of stone to exist since 3700 BC. Stones naturally take in and let out moisture, but excessive moisture can enter through failed mortar joints, exposure to cascading water due to a lack of effective gutters or sealants that do not allow normal water vapour to escape. Repointing work is done with mortar that is harder than the stones.

The entire structure of a traditional Dai bamboo building is made of bamboo bundling. The walls are made of bamboo sticks (thin pieces of bamboo), while the roof is covered with straw clamped by bamboo sticks. The bamboo building is very light. The natural surface of the bamboo is smooth, clean, with an attractive color which does not require painting, scraping or polishing. Besides being used as a structural element, bamboo can also serve other functions, such as: flooring, wall panelling, water pipes, drainage, and furniture. Although bamboo is a great sustainable material, it has a number of disadvantages. One major disadvantage of bamboo is its poor resistance to fungi and bacteria. It is sensitive to attack from insects. So it must be treated against them, otherwise, the material has a very short life.

During daylight hours, plants take in carbon dioxide and release oxygen through photosynthesis, and at night only about half that carbon is then released through respiration. Plants take in CO2 during the day and release oxygen. In a process called “photosynthesis,” plants use the energy in sunlight to convert CO2 and water to sugar and oxygen. Photosynthesis uses carbon dioxide to make sugar and produces oxygen as a byproduct. Respiration uses oxygen to release energy from stored sugar and produces carbon dioxide as a byproduct. ... However, if the plants are growing, then over a period of 24 hours they will produce more oxygen than they consume.

There are several things that we get from plants, some of which are-
1) They provide us all our basic necessities i.e. food, clothing and shelter.
2) Plants provide us the life gas oxygen and the wood.
3) We get gums and resins from plants.
4) They also provide us pleasant scenery, fragrance and perfumes.
5) Several plants like Turmeric, Opium, Tulasi, Neem etc. have medicinal importance to us.
6) They provide different habitats and play important role in different Bio-Geo- Chemical cycles etc.

Verbal communication is the use of auditory language to exchange information with other people. ... Non-verbal communication is communication between people through non-verbal or visual cues. This includes gestures, facial expressions, body movement, timing, touch, and anything else that communicates without speaking. For this reason, a plethora of seemingly nonverbal communication forms can be used as examples of verbal communication, including written letters, memos, newsletters, newspapers, journals and even personal notes. 

Examples of Nonverbal Communication

• Body Language. Body language such as facial expressions, posture and gestures.
• Eye Contact. Humans typically seek information in the eyes. ...
• Distance. Your distance from people during communication. ...
• Voice. Nonverbal use of the voice such as a gasp or a sigh.
• Touch. Touch such as a handshake or high five.
• Fashion. ...
• Behaviour. ...
• Time.

The word amphibian means two-lives.  Amphibians spend their lives in the water and on land.

All amphibians begin their life in water with gills and tails.  As they grow, they develop lungs and legs for their life on land. 

Example: Frog

Solar power works by converting light from the sun into electricity. This electricity can then be used in your home or exported to the grid when it's not needed. ... This is then fed into a solar inverter which converts the DC electricity from your solar panels into AC (Alternating Current) electricity. Solar panels work by absorbing sunlight with photovoltaic cells, generating direct current (DC) energy and then converting it to usable alternating current (AC) energy with the help of inverter technology. AC energy then flows through the home's electrical panel and is distributed accordingly.