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alexdok [17]
3 years ago
15

The element important to life that are recycle are

Biology
1 answer:
katovenus [111]3 years ago
3 0
Circulation of chemical nutrients such as oxygen,carbon,phosphorus,nitrogen,water, and calcium. Through the biological and physical world are known as biogeochemical cycles.
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Describe the base-pairing rules in any DNA molecule
In-s [12.5K]
The selective pairing of adenine (A) with thymine (T) and guanine (G) with cytosine (C) is based on the number of hydrogen bonds established between one of the purine bases and the one pyrimidine bases
6 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
In corn, smooth kernels (K) are dominant to wrinkled kernels (k).
Roman55 [17]

Heterozygous means 2 different zygotes. Since Smooth kernels are dominant, Zygotes KK and Kk will be smooth and kk will be wrinkled.

If you were to set up a Punnett Square chart like:

           K     k

   K   (KK)    (Kk)

   k   (Kk)     (kk)

the ratio for smooth to winkle would be  3 : 1

Which Will be 75% Smooth  and 25% Wrinkle

5 0
3 years ago
Jed is 31 and qualifies as being functionally illiterate. Which of the following statements would best describe Jed's situation?
kupik [55]

Jed is suffering from attention deficit disorder. He may have depression or down syndrome. correct me if im wrong

8 0
4 years ago
Where does the energy from and where does it end up?​
sveticcg [70]

Answer:

Our energy supply comes mainly from fossil fuels, with nuclear power and renewable sources rounding out the mix. These sources originate mostly in our local star, the Sun. Electricity falls into its own category because it's an energy carrier and not a primary source.

4 0
3 years ago
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