When may a hypothesis be revised?

A - never

B - based on experimental data

C - after it has been proven to be correct

D - after at least one year from when it was first tested

Which of the following practices does very little to control soil erosion? a. no-till planting b. root-level irrigation c. terracing of hillside farms d. industrial monoculture e. agriculture

Which activity would be forbidden Nazi

Sometimes fires burn down large areas of forests that are part of the biosphere. Other than the biosphere, which of Earth's other systems is a forest fire most likely to affect?

In much of what is now Canada, glaciers covered the land as little as 12,000 years ago and glacial erosion scoured the land surface leaving very thin soil or bare rock over large areas.

Tiananmen Square, the Forbidden City, the Temple of Heaven, and the Summer Palace are signature landscapes of what city?

Consider the debate in East Africa over land between nature parks and farmers. Who do you think should get more of the land in these rural areas? Explain.

Why is China called a Republic?

If it is 5 am where you are and 7:30 pm GMT, what is your longitude

7. What are the three ways that heat is transferred in the atmosphere? Give an example of each of the processes

Ocean currents movement and direction of flow are influenced by? the Coriolis effect all of these are correct the size and shape of continents prevailing winds