| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.02 |
| Score | 0% | 60% |
Secondary consumers that also eat producers are known as:
scavengers |
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omnivores |
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carnivores |
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herbivores |
Secondary consumers (carnivores) subsist mainly on primary consumers. Omnivores are secondary consumers that also eat producers. Examples are rats, fish, and chickens.
Which of the following is related to the Cambrian Explosion?
carbon dating |
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first civilizations |
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extinction of dinosaurs |
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fossil record |
The Cambrian period is one of the most significant geological time periods. Lasting about 53 million years, it marked a dramatic burst of changes in life on Earth known as the Cambrian Explosion. It is from this period that the majority of the history of life on Earth, as documented by fossils, is found. Called the fossil record, the layering of these mineralized imprints of organisms preserved in sedementary rock have allowed geologists to build a historical record of plant and animal life on Earth.
In the food chain, omnivores may be which of the following?
secondary or tertiary consumers |
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secondary consumers or scavengers |
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primary or secondary consumers |
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primary or tertiary consumers |
Secondary or tertiary consumers may be omnivores.
An asteroid belt holds many of the asteroids in our solar system. It is located between the orbits of which planets?
Mars and Jupiter |
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Mars and Earth |
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Mercury and Venus |
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Jupiter and Saturn |
The solar system also contains over a million rocky fragments of at least 1km in diameter called asteroids as well as millions more with smaller diameters. Many of these asteroids are an asteroid belt between the orbits of Mars and Jupiter.
An element in the physical state of __________ maintains neither a constant volume nor a constant shape.
plasma |
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liquid |
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solid |
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gas |
The gaseous state occurs at a higher temperature range than the solid and liquid states of the same substance. In this state, molecules flow very freely around each other and will spread out as far as they're able. Gases maintain neither a constant volume nor a constant shape.