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3 years ago

The earth is the _____ planet.

Biology

2 answers:

maksim [4K]3 years ago

6 0

The earth is the 3rd planet. I think that's what you want

yulyashka [42]3 years ago

3 0

Answer:

densest planet

Explanation:

The Earth is the densest planet in the Solar System, at 5.51 g/cm3, as others have correctly answered. The reason for this high density is the apparent collision, over four billion years ago, of a proto-Earth and a hypothetical Mars-sized planet Theia.The two planets collided and melted together, the iron common to both sank into the center of the Earth, and the lighter rocks (mostly granite) were thrown off and eventually congealed as the Moon, which has a density of 3.34 g/cm^3. (Granite has a density of 2.75 gm/cm^3). So the heavier material from both planets remained within Earth, and the lighter materials from both planets became the Moon. Water by definition has a density of 1 gm/cm3. The planet Saturn, by the way, has an *average* density of 0.69 gm/cm3, which is about the density of oak.

saw in another page explantation not mine

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Which B.F. Skinner invention allowed him to train subjects through operant conditioning?

Bezzdna [24]

Answer:

A: Cumulative recorder

Explanation:

B. F. Skinner was a psychologist, author, behaviorist and inventor of Operant conditioning chamber and Cumulative recorder. The purpose of cumulative recorder was to study the rate of operant conditioning. It is a process in which behavior of an organism is modified or an organism is conditioned to perform a specific behavior through giving punishment or reward.

For example: We teach a kid that he should not touch a hot stove because it will burn his hands, or we give him a box of candies to perform a specific task or behave in a certain way. Skinner used Cumulative recorder to find the effect of certain factors on behavior or response of an organism For example: the rate at which lever was pressed by a monkey to get bananas etc.

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3 years ago

Read 2 more answers

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blagie [28]

Native species ??………..

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3 years ago

How are freshwater environments, such as rivers and lakes, being impacted by human activity

Rama09 [41]

Answer:

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Explanation:

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3 years ago

An ___ ___ is observed due to the unequal transport of charge by a transport mechanism that occurs across a plasma membrane.

insens350 [35]

Answer:

An electrogenic effect

Explanation:

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3 years ago

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Ludmilka [50]

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4 years ago