Why might approaching an octopus cause a crab to start scurrying

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Answer 1

Answer: Bc the octopus is much more bigger in size than the crab

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Use the term cell differentiation in a sentence

On most periodic tables a single atomic mass is listed instead of the mass numbers for all the stable isotopes. How is this mass related to the different isotopes?

Answers

Answer: The mass of the atom is basically the average atomic mass of all the stable isotopes.

Explanation:

Average atomic mass is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.

Formula used to calculate average atomic mass follows:

$\text{Average atomic mass }=\sum_(i=1)^n\text{(Atomic mass of an isotopes)}_i* \text{(Fractional abundance})_i$

For Example: Taking the element silicon

Three isotopes of Silicon, which are Si-28, Si-29 and Si-30.

Average atomic mass of silicon = 28.086 amu

As, the average atomic mass of silicon is closer to the mass of Si-28 isotope. This means that the relative abundance of this isotope is the highest as compared to the other two isotopes.

Percentage abundance of Si-28 isotope = 92.2%

Percentage abundance of Si-29 isotope = 4.7 %

Percentage abundance of Si-30 isotope = 3.1%

Hence, the mass of the atom is basically the average atomic mass of all the stable isotopes.

Since atoms of the same element can vary in number of neutrons, isotopes of elements exist. Since neutrons have mass more or less of them in an atom affects its mass. Mass number is the average mass of the isotopes of an element with respect to the relative abundance of each isotope.

The scientists used Nitrogen in her experiments

Answers

Answer:

Good for her?

Explanation:

Whats the question?

If an organism starts from only one cell,how do we get different body parts and organs

Answers

Every cell has chromosomes in its nucleus. In a human cell,
there are 26 of them. AND ... lined up on every chromosome
are thousands and thousands of GENES. Those carry the
instructions for what kind of organ or bone or tissue or hair
this cell will be used to build, how the structure will work, how
tall you will be, what color your eyes will be, how deep your
voice will be, and what illnesses you will have.

Every cell has the complete set of instructions in it. In the past
several years, we have just started to be able to read them, and
extraordinary progress has been made. There's an awful long way
still left to go.

If potential energy is at point A is 12 joules, what is the potential energy at B ?