Answer:
Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: water 
Physical property is defined as the property of a substance which becomes evident during physical changes. Water is liquid at room temperature whereas hydrogen and oxygen are gases at room temperature.
Chemical property is defined as the property of a substance which becomes evident during chemical changes. Water reacts with metals to form bases, hydrogen reacts with metals to form hydrides and oxygen reacts with metals to form oxides.
In the winter its color changes to more resemble their <em>winter</em> surroundings, so they are more white, enabling them to blend in better with their white surroundings. In summer, its color changes to more resemble its <u><em /></u><em>summer</em> surroundings, so they are more brown like the rocks and ground around them.
Answer:
Malaysia is a beautiful country and rich in biodiversity of natural resources. People in Malaysia take several steps to protects its biodiversity and it is one of the beautiful tourism spot as well. If no steps are taken to protect the species, there may be following effects:
- Loss of biodiversity and species can become endangered or extinct.
- Can lead to environmental disasters due to imbalance in biodiversity.
- Habitat loss of plants and animals.
- Climate can change due to ecosystem instability.
- Tourism will reduce in Malaysia that can affect it economically as well.
