Australia accounts for over ________% of the world's iron ore

A) 25
B) 33
C) 55
D) 74


A

Environmental & Atmospheric Sciences

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Radiant energy from the Sun is composed of shorter wavelengths than radiation from the Earth because the Sun

A. has a higher temperature than the Earth. B. is an energy source while the Earth is primarily an energy receiver. C. has much more thermal energy. D. none of the above

Environmental & Atmospheric Sciences

In a flower, the sticky structure that helps to trap pollen is known as the

A) stamen. B) anther. C) ovary. D) stigma.

Environmental & Atmospheric Sciences

Devonian mass extinctions may have been partly caused by global tectonic changes as the

collision of continents reduced the amount of shallow marine shelf environment. Indicate whether the statement is true or false.

Environmental & Atmospheric Sciences

The North American continent falls within the biogeographic ________ realm.

A) Nearctic B) Palearctic C) Ethiopian D) Neotropical

Environmental & Atmospheric Sciences