Explanation: Racial classification can be defined as the way humans are classified based on their physical and social traits which they have such as how they look, their skin color, hair texture, the native languages they speak.

Scientists used racial classification to learn how unique and different humans are.

7 0

3 years ago

PLEASE I NEED THIS ASAP If you had a cell that was cube-shaped with a side length of 20µm, calculate the surface to volume ratio

weeeeeb [17]

Answer:

Ratio = $3\times 10^5$

Explanation:

Side of a cube, a = 20 µm

$a=20\times 10^{-6}\ m$

The surface area of a cube, A = 6a² (a is side of the cube)

The volume of a cube, V = a³

The ratio of the surface to volume ratio of the cell will be given by :

$R=\dfrac{6a^2}{a^3}\\\\R=\dfrac{6}{a}\\\\R=\dfrac{6}{20\times 10^{-6}}\\\\R=3\times 10^5$

So, the ratio of the surface to volume ratio of the cell $3\times 10^5$ .

6 0

3 years ago

What is needed to build a molecule or RNA?

atroni [7]

Particles.....:) of any type

5 0

3 years ago

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