STAAR Questions Session 7 - Interactions in Ecosystems; Plate Tectonic Theory; Plate Tectonics; Watersheds & Human Activity; Biodiversity - Randall Skoog | Library

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Interactions in Ecosystems (6.12A)

A scientist added bacteria to a sterile petri dish with a growth medium called
agar. No other materials were added. The graph shows the growth of bacteria
over time.

Which of these most likely explains why the bacteria population stopped
growing?

The bacteria evolved into another organism.

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The fossils must have been transported by humans or other animals.

The fossils must have been separated as the continents slowly drifted apart
over time.

Weathering, erosion, and deposition moved the fossils.

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Surface water runoff from a recent storm.

The purification of water through the water cycle.

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Formation of a rift valley

A major earthquake

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Ecosystem 2, because it includes both fish and birds.

Ecosystem 3, because it has the greatest amount of insects.