How do scientists know that some mountains were once at the bottom of an ocean?

Describe how a laser-ranging device works.

Which of the following does not hinder agricultural production in China? A. China does not have enough arable land. B. All of China's arable land is limited to one region. C. China's rural areas have poor infrastructure. D.

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?

What are the properties of consecutive angles of trapezoid?

1. What effects do the monsoons have on central and southeast Asia?

What are the most wide spread Paleozoic fossils?

Less developed nations are to extended families as more developed nations are to nuclear families. matrilineal families. families of procreation.

If star a has an apparent magnitude of - 6 and star b has an apparent magnitude of 5, which star is brighter in our sky?

What is one advantage of free trade?

Explain how the shading of the direct light of the sun causes a lunar eclipse.