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KengaRu [80]
3 years ago
14

1) What is photophone ?

Biology
1 answer:
Marina CMI [18]3 years ago
8 0

Answer:

The photophone is a telecommunications device that allows transmission of speech on a beam of light.

Explanation:

<h2>have a great day</h2>
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The Earth and Moon compare in terms of gravitational force as Earth's gravitational force is stronger than the Moon's.

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According to universal law of gravity, the gravitational force is the attractive force between two objects separated by a distance. The magnitude of gravitational force is directly proportional to the product of masses of the objects and inversely proportional to the square of the distances between them.

In this case, the gravitational force acting on us due to Earth will be considered due to the mass of Earth as the mass of Earth is very large compared to our mass.

F=\frac{GM}{R^{2} }

So as the mass of the Earth is greater than the mass of the moon, so the gravitational force of Earth will be stronger than that of Moon.

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A bottom-up system concentrates attention on how resources (space and nutrients) influence higher trophic forms , whereas a top-down system focuses on interactions at top level consumers (predators) and their prey influence on lower trophic forms.

Explanation:

hope it helps you  !

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