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alex41 [277]
3 years ago
9

How did the Earth get these different layers? Did the Earth always have very separate, distinct layers? Describe what happened.

Biology
1 answer:
Orlov [11]3 years ago
7 0
Answer: The different layers are a result of lighter parts (such as the continental crust) settling at the surface level and heavier parts (such as iron and nickel in the core) settling in the middle. The layers separate by density, otherwise known as compositional layering. The earth did not always have these layers, as it had to undergo cooling to form some of them (like the continental crust).
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What animals that grow naturally in the Pacific Northwest and Kitsap Peninsula ? please help
Luba_88 [7]

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Kitsap Peninsula:

Marine mammals of the sound include orcas, sea lions, sea otters, gray whales, humpback whales, and harbor seals. Underwater plants provide food, breeding areas, nurseries, and resting places for wildlife in the sound.

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VikaD [51]
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harkovskaia [24]

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5 0
3 years ago
What are roles of producers, consumers, and decomposers in an ecosystem​
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An organism that obtains energy and nutrients by feeding on other organisms or their remains. A food web is a model of the feeding relationships between many different consumers and producers in an ecosystem. Without plants (the primary producers) consumers and decomposers would not be able to live. Producers always start every food chain. A consumer, also called a heterotroph, is an organism that cannot make its own food. It must eat producers or other organisms for energy.
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A key feature of animal body plans is that they can show multiple types of symmetry.For example,,a dog would represent bilateral
Stella [2.4K]

Answer:

A key feature of animal body plans is that they can show multiple types of symmetry.For example,,a dog would represent bilateral symmetry,while a jellyfish and other cnidarians would represent <u><em>radial symmetry</em></u>.

Explanation:

In biology, symmetry can be described as the balanced distribution of the body shape of an organism.

Radial symmetry can be described as a symmetry which depends on a central axis. The symmetry of cnidarians depends on a central axis hence they have radial symmetry.

Bilateral symmetry can be described as a symmetry in which the two halves of the symmetry are mirror images of one another. For example, humans, dogs etc.

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