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quester [9]
3 years ago
6

Explain what maria and craters are and how they formed?

Biology
1 answer:
xz_007 [3.2K]3 years ago
7 0

Maria and craters are explained below:

<u>Explanation: </u>

  • The Moon is divided into light area lunar highlands and a dark area called Lunar Maria.
  • Lunar Maria is large, dark, basaltic plains formed on earth's moon formed by ancient volcanic eruptions.
  • Craters are formed when an impacting object falls and hits the moon's surface with greater speed and also formed as a result of the outward explosion of rocks.
  • Craters are often caused by asteroids and meteorites with the lunar surface.  
  • Unlike earth-moon does not have an atmosphere to protect itself from impacting bodies. This is the reason for more number of craters formed on earth.

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<u>Answer</u>: d. it will release chemical messengers.

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6 0
3 years ago
g If a colony of bacteria starts with 1 bacterium and doubles in number every 20 ​minutes, how many bacteria will the colony con
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Answer: 2.81 x 10∧14 baterias after 16 hours.

Explanation:

Hi, first we have to find how many 20 minute intervals are in 16 hours.

If 1 hour = 60 min, 16hours = 960 minutes (16 h x 60 min / 1 h)

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7 0
2 years ago
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