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olga nikolaevna [1]
3 years ago
11

Massive stars end their lives in a huge explosion called what?

Biology
2 answers:
I am Lyosha [343]3 years ago
5 0
Supernovas is the correct answer
Afina-wow [57]3 years ago
3 0

Answer:

The death of a star the results in an explosion is called a Super Nova.

If This helped consider making it brainliest.

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Today, most species are in _____. a. stasis b. change c. coordinated stasis d. isolation
Anarel [89]
I think the correct answer is C. Today, most species are in coordinated stasis. This is an idea proposed where  a certain species shows stability in terms of evolution for a certain number of years. Then, experiences rapid changes or extinction and formation of new group of species.
7 0
4 years ago
Read 2 more answers
You have a large bottle of 2% saline solution in the lab (2% NaCl, which is sodium chloride). You need 5 ml of 0.1% saline for a
zvonat [6]

Answer:

volume of 2% saline (V₁) = 0.25ml

volume of water = 4.75ml

Explanation:

The requirement in the question is to obtain 0.1% of NaCl from 2% NaCl, and the process is dilution. The general dilution equation is guven by:

C₁V₁ = C₂V₂

where:

C₁ = initial concentration = 2%

V₁ = initial volume = ?

C₂ = final concentration = 0.1%

V₂ = final volume = 5ml

C₁V₁ = C₂V₂

calculating for V₁

∴ V₁ = (C₂V₂) ÷ C₁

= (0.1% × 5) ÷ 2%

V₁ = 0.25ml

Now, let us calculate the volume of water needed:

V₁ + Volume of water = V₂ (volume of 0.1% NaCl)

0.25 + volume of water = 5

volume of water = 5 - 0.25

volume of water = 4.75ml

8 0
3 years ago
In the carbon cycle, how is carbon stored in organisms and then exchanged with the environment?
yan [13]

Answer:

The carbon cycle is nature's way of reusing carbon atoms, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again. Most carbon is stored in rocks and sediments, while the rest is stored in the ocean, atmosphere, and living organisms.

Explanation:

6 0
3 years ago
4. At what point was the solution in beaker ""B"" neutralized?
Marina86 [1]

Answer:

Explanation:

This is called the equivalence point. That is the exact point during titration where the relative amounts of each substance in the chemical reaction of titration become well defined by the coefficients in the balanced chemical equation used for expressing the kinetics of reaction.  

A titration is an experimental set up   with a controlled acid-base neutralization reaction.it is used to determine the unknown concentration of an acid or a base.  

Acids and bases neutralize each other, forming a salt and water. Basically, a strong acid-strong base neutralization gives  a neutral solution with a pH of 7.

7 0
4 years ago
Eukaryotes arose.....
BlackZzzverrR [31]

Answer:

The right answer is A ..ok

5 0
3 years ago
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