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NNADVOKAT [17]
3 years ago
12

Which pair of elements can be used to determine the age of a fossil that is over one billion years old?

Biology
2 answers:
lbvjy [14]3 years ago
8 0

Answer:

A

Explanation

It should be A., lead and uranium.

rjkz [21]3 years ago
5 0
D sorry if I’m wrong
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Can fatigue seriously impair driving ability.<br> a.no<br> b.yes
NikAS [45]
The correct answer is B.

When your body and mind are fatigued you are out into a field of fuzziness. When dealing with extreme fatigue, there is the obvious problem of falling asleep in the road, which could result in terrible and most likely fatal accidents. But there are also other problems mentally and visually that can occur that would impair your driving ability when facing extreme fatigue.

I hope this helps! :)
5 0
3 years ago
a man is twice as old as his son.Five years ago the ratio of their ages was 9:4.Find the sum of their ages​
elena-s [515]

Answer:

75years

Explanation:

Let the Father's age be represented by 2x

Let the Son's age be represented by x

Five years ago;

Man's age will be = 2x - 5

Son's age will be = x - 5

If the ratio of their ages five years ago was 9:4, then;

2x - 5/x-5 = 9/4

4(2x - 5) = 9(x - 5)

8x - 20 = 9x - 45

- Collect like terms

-20 + 45 = 9x - 8x

25 = x

Hence, the son's age = 25 years

If x = 25, the father's age (2x) will be 2 × 25 = 50years

The sum of their ages will be = 25years + 50years = 75years

6 0
3 years ago
What are 2 beneficial uses of fungi?
stiks02 [169]
One is that Fungi are vitally important for the good growth of most plants, including crops, through the development of mycorrhizal associations . 

Another one is that Penicillin, perhaps the most famous of all antibiotic drugs, is derived from a common fungus called Penicillium.

Btw Your Welcome
8 0
3 years ago
Which statement is true about crossing over of genes?
Elenna [48]
I think it A I hope this help
7 0
3 years ago
Read 2 more answers
Why is radioactive dating important when approximating the age of Earth? Scientists can identify different life forms using inde
Wittaler [7]
<h2>Answer:</h2>

Scientists can determine the order of when rocks formed on Earth.

<h2>Explanation:</h2>

Radioactive dating is the technique in which scientists used radioactive material like carbon or uranium to date the materials. This method of dating is based on the known decay rate of the isotopes of an element. Uranium, Carbon, and potassium are few examples of elements commonly used in radioactive dating.

4 0
3 years ago
Read 2 more answers
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