Why are the boundaries of the tectonic plates not always easy to identify?

Is Russia in Asia or Europe?

Which of the following is not a surface feature of the Sun? a. sunspots c. prominences and flares b. corona d. CME's

The age of the Earth according to modern estimations is aboutr A. 8 billion years. B. 4.6 billion years. C. 3.5 billion years. D. 1.5 billion years. E. a few thousand years.

The rich soil of the Congo region is perfectly suited for growing crops True or false

What is the answer to this riddle?: what walks on four feet at the morning and two in the after noon and three in the evening?

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.

Describe how modern science operates and distinguish it from philosophy, pseudoscience, and religion. In recognition of these distinctions, what individual (s) and methods mark the beginning of Astronomy as a science?