what is a biosphere?
shima zellaThe biosphere is the part of the Earth that supports life, including all living organisms and the environments in which they live. It includes the atmosphere, hydrosphere, and geosphere, and…
What is acceleration?
Acceleration is the rate of change of velocity with respect to time. In physics, acceleration is defined as the rate at which an object changes its velocity. It can be…
What is air pollution?
Air pollution refers to the presence of harmful substances in the air that we breathe, such as chemicals, particles, and gases, that can cause negative health effects and damage the…
Which is the largest continent?
Asia is the largest continent on Earth. It covers an area of approximately 44,579,000 square kilometers (17,212,000 square miles), which is about 30% of the Earth's total land area. The…
Which is a dangerous animal in the world?
It is difficult to say which animal is the most dangerous in the world, as different animals can be dangerous in different ways and in different contexts. However, some animals…
Which is the longest river in the world?
The Nile River is generally considered to be the longest river in the world, with a length of about 4,135 miles (6,650 kilometers). It runs through several countries in northeastern…
Where is brazil?
Brazil is a country located in South America. It is the fifth largest country in the world, both by land area and population. Brazil is bordered by several countries, including…
Distinguish between smoke and hydrocarbon
sophiaSmoke is a mixture of solid particles and gases that are produced when a material burns. It is typically made up of carbon compounds and other elements such as nitrogen…