82) The oldest fossilized remains of organisms are primitive ________ bacteria recovered from
rocks formed on the sea floor about 3.5 billion years ago.
A) photosynthetic
B) chemosynthetic
C) heterotrophic
D) streptococcus
Bloom’s Taxonomy: Remembering/Understanding
Section: 1.7 Did Life Begin in the Oceans?
Essent’l Concept: 1.7 Discuss why life is thought to have originated in the oceans
OSLP: 5 The ocean supports a great diversity of life and ecosystems.
83) Earth’s atmosphere became oxygen rich about 2.45 ________ years ago.
A) billion
B) million
C) trillion
D) thousand
Bloom’s Taxonomy: Remembering/Understanding
Section: 1.7 Did Life Begin in the Oceans?
Essent’l Concept: 1.7 Discuss why life is thought to have originated in the oceans
OSLP: 5 The ocean supports a great diversity of life and ecosystems.
84) The great oxidation event resulted in the massive die-off of which of the following?
A) Anaerobic bacteria
B) Blue-green algae
C) Dinosaurs
D) Land plants
Bloom’s Taxonomy: Remembering/Understanding
Section: 1.7 Did Life Begin in the Oceans?
Essent’l Concept: 1.7 Discuss why life is thought to have originated in the oceans
OSLP: 5 The ocean supports a great diversity of life and ecosystems.
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