which ecosystem has been least changed by humans - forest, grasslands, or desserts? why do you think so

Are there energy alternatives that emit less CO2 than natural gas does? If so, are these solutions equally available everywhere on Earth

What is a sanction?

How are ocean ridges formed

Why do we need to clean the river water before supplying it to home?

Which factor has not contributed to a dramatic increase in the world's population in recent centuries? A. Improved medical care B. Decreasing death rates C. Population clusters in cities D. Modern farming techniques

The sun exerts a gravitational pull on earth. why doesn't earth fall into the sun?

What body of water lies east of attica?

What causes climate to change over time

17 of the 18 warmest years on record have occurred in the 21st century. true or false?

Which of the following indexs includes factors such as use of time, environmental issues, and income distribution to determine development? A. Human Development Index B. Genuine Progress Indicator C. Gross National Happiness D. Gross National Income