Describe the sixth mass extinction event and its specific causes
What will be an ideal response?
Currently, most biologists believe that Earth is in the throes of its sixth mass extinction event and that we are the cause. The changes to Earth's environment by human population growth, resource use, and development have greatly altered conditions for many species, have driven many to extinction already, and are threatening countless more. The alteration and outright destruction of natural habitats, the hunting and harvesting of species, pollution, and the introduction of invasive species from one place to another have contributed to the threat to Earth's biodiversity.
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What is the name of the last volcano to explode in California?
a) Mr. Hood b) Mt. Lassen c) Mt. Shasta d) Mt. Everest
When ice crystals grow primarily through riming:
A) the result will be powder snow for skiers. B) the formation must be taking place in very cold clouds. C) the resulting snowflakes will be so small that they will gently float to the ground. D) the result will be a dense and wet snow.
The most famous of the comets is the one carrying Edmund Halley's name, the man who calculated its orbit in 1682 and predicted its return to the inner solar system.
Answer the following statement true (T) or false (F)
The nebular hypothesis explains the formation of ________.
A. the Moon B. the universe C. our solar system D. Venus's atmosphere E. black holes