Both sphenopsids and lycopsids were important members of the Pennsylvanian forests. Indicate whether the statement is true or false


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Environmental & Atmospheric Sciences

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Shoot a cannonball horizontally from a cannon at a mountain top and it crashes to Earth when fired at a speed of

A. 5 km/s. B. 9 km/s. C. 8 km/s. D. all of the above

Environmental & Atmospheric Sciences

Environmental sustainability is the use of natural resources leading to their availability for only one or two generations.

A. True B. False

Environmental & Atmospheric Sciences

The Moon has been volcanically and tectonically inactive for more than

A. 2 million years. B. 1 billion years. C. 1 million years. D. 2 billion years.

Environmental & Atmospheric Sciences

The Russian language uses which alphabet?

A) Turkish B) Roman C) Sanskrit D) Cyrillic E) Arabic

Environmental & Atmospheric Sciences