What was the distribution of trilobites in time and space during the Paleozoic? What niches did trilobites fill?
Trilobites lived from early Cambrian to the end of the Permian in all marine environments, from shallow to deep ocean settings, all around the world. Some were free swimming predators or filter feeders swimming throughout the water column.
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If the pH of a solution was 7 and you were to increase the hydronium ion concentration 1000×, what would the pH be?
A. 10 B. 7,000 M C. 1 × 10-4 M D. 4 M E. 4
What is a primary source of the nutrients that fuel harmful algal blooms (HABs)?
A. Fertilizer B. Climate Change C. Oil spills D. Acid Rain
There is no evidence in the geologic record that multicelled organisms of any kind existed prior to the Cambrian
a. True b. False
According to your text's authors, globalization is the most fundamental reorganization of the planet's social and economic structures since the Renaissance
Indicate whether the statement is true or false