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vodomira [7]
3 years ago
7

What percent of species become extinct when mass extinction occurs?

Biology
1 answer:
777dan777 [17]3 years ago
6 0

Answer:

Scientists estimate that at least 99.9 percent of all species of plants and animals that ever lived are now extinct.

Explanation:

(Happy to help)

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A student measured the mass and volume of a metal sample using a triple beam balance and a graduated cylinder. The sample has a
alexdok [17]

Answer:

d=3.79\ g/cm^3

Explanation:

Given that,

The mass of a sample, m = 16.7 grams

Volume of the sample, V = 4.4 cm³

We need to find the density of the metal sample.

Density = mass/volume

Substituting all the values,

d=\dfrac{16.7\ g}{4.4\ cm^3}\\\\=3.79\ g/cm^3

So, the density of the metal sample is 3.79\ g/cm^3.

5 0
2 years ago
Scientists have evidence that meteorites have come from which option of locations?
Step2247 [10]

Mars and Moon are the locations from which meteorites would come.

Option (c);

<u>EXPLANATION: </u>

  • The meteorites found on Earth look like martian crystal rocks.
  • These might be first ejected into space during a collision of an asteroidal object with Moon or Mars and then it got into the Earth orbit because of the force produced during the collision.
  • There are around seventy meteorites recognised to have come from the planet Mars till up to the present date.
  • There are three types of meteorites such as Martian meteorites and a sample of two lunar meteorites.
  • To identify the origin of the meteorite, the scientist tries to identify the type of rock followed by analysing the chemical composition and then try to identify its age.
8 0
3 years ago
Do you think earth has a limit to the number of humans it can sustain
AlekseyPX

Answer:

Yes earth is only so big

Explanation:

SUPOSSEBLY IN 2035 we will have a small civilization on mars. Cause in 1 million years or less humans will be over populated on earth and forced to make room underground or higher in the skies like outer space!

5 0
2 years ago
Explain a scenario in which secondary succession would occur.
andrey2020 [161]

Answer:

In secondary succession, a previously occupied area is re-colonized following a disturbance that kills much or all of its community. A classic example of secondary succession occurs in oak and hickory forests cleared by wildfire. Wildfires will burn most vegetation and kill animals unable to flee the area.

4 0
3 years ago
1. Please help me I will mark brainest if it is right
jekas [21]

Answer:

Where are the Options?

Explanation:

.

5 0
3 years ago
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