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mart [117]
3 years ago
7

Approximately _____ elements occur naturally on earth.

Biology
2 answers:
zlopas [31]3 years ago
8 0

Answer: Till date 118 elements have been approximately 94 elements occur naturally on earth. Though some of the elements are present in very small quantities. The rest of the 24 elements in the periodic table are synthetic elements. There are almost 80 elements that have a stable isotope and 38 elements have radionucleides which means that they decay over a period of time.





FromTheMoon [43]3 years ago
3 0
<span>Of the 118 elements that have been discovered, 90 of them indisputably occur in nature. There is disagreement over whether four more or eight more occur naturally as a result of radioactive decay of other natural elements. The answer is, therefore, 94 or 98.</span>
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What is the density of a liquid that has a mass of 5 g and a volume of 10ml?
Sonja [21]

Answer:0.5 g/cm

Explanation:

calculate the density : we'll use the formula below

density = volume over mass

Usually, density will have units of  

g

m

L

when dealing with a liquid or units of

Usually, density will have units of  

g

m

L

when dealing with a liquid or units of  

g

c

m

3

when dealing with a solid.

The mass has units of grams,  

g

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The volume can have units of  

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or  

c

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We are given the mass and the volume, both of which have good units. All we have to do is plug the given values into the equation:

D

e

n

s

i

t

y

=

5

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Thus, the substance has a density of  

0.5

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4 0
3 years ago
John and Jane Jones’ newborn baby girl, Leah, has just been diagnosed with galactosemia. Prior to their genetic counseling appoi
Neko [114]

Pedigree is the symbolic representation of the history of an individual's family connections, presenting their ascendants and descendants in an organized manner. This is an important instrument in the genealogical process, as it is a way of gathering data about the ancestors of the members who participated in a person's family building so that the connections between these individuals are established.

The family pedigre shown in the above question would be:

Hanna's mother and Hanna's father have three daughters of Hope's order, Holly and Hanna. Hanna and Harry have a son named John. John is married to Jane. His children are Lee and Leah (diagnosed with galactosemia ). Janes's mother is Hilda and the brother is Joe. Joe is married to Jen and his son is Les.

6 0
3 years ago
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1) What did you notice about the letter e when you increased in magnification from the 4x to the 10x and then to the 40x:
tia_tia [17]

Answer: U JUST NEED TO DRAW THE LETTER E BIGGER INN EACH CIRCLE!

sorry for caps.. didnt notice it was on

Explanation:

8 0
2 years ago
What is the number of individuals that die in a population in a certain time period called?
deff fn [24]
<span>ease or a risk factor such as a smoking or seat-belt use

I hope this helps!</span>
7 0
3 years ago
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If a polygons is an octagon then it has eight sides
Delicious77 [7]

Answer:

This is true.

Explanation:

An octagon is a type of polygon that has (8) sides.

7 0
3 years ago
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