Which of the following correctly describes the importance of the nitrogen cycle?

Biology

1 answer:

Stella [2.4K]3 years ago

8 0

The answer is D To create ammonia needed by plants to create proteins.

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Sean wants to know the effects of seawater on plant growth. What is the dependent variable?

GrogVix [38]

The answer is the plant growth, because the dependent variable is what responds to the independent variable.

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3 years ago

A communications satellite transmits a radio wave at a frequency of 9.4 x 10^9 Hz. What is the signal’s wavelength? Assume the w

sergejj [24]

To calculate this we will use the light equation:
$c=$ λ $*f$

We have Frequency $f=9.4* 10^{9}Hz$ .
We know that speed of light in vacuum is $c =3.8* 10^{8} m/s$ .
Since a unit of speed of light is m/s, we can change the unit of frequency Hz to 1/s, since Hz means cycles per second (f=1/T).

So:
$f=9.4* 10^{9}1/s$
 $c =3.8* 10^{8} m/s$

 $c=$ λ $*f$
⇒ λ $= \frac{c}{f}$
⇒ λ $= \frac{3.8* 10^{8}}{9.4* 10^{9}}$
⇒ λ $=0.04 m$

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4 years ago

During the last century, both global temperatures and men’s average height have increased. Do these correlated trends mean that

Sloan [31]

No

There’s no direct correlation between the Earth temperature and the height of men. In fact, the countries that have the tallest men, are also usually the coldest

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3 years ago

Luisa sells stuffed animals. She sells a stuffed elephant for 34.90 and the sales tax is 6% of the sale price. About how much is

beks73 [17]

⓵ Transform 6% into a number by dividing 6 by 100 :

6% = 6 ÷ 100 = 0.06

⓶ To find out how much is the tax on the elephant, you need to multiply 6% (so 0.06) by the price of the elephant, which is 34.90$ :

6% of 34.90 = 0.06 × 34.90 = 2.094

⓷
If you round up, the final answer would be that the sale taxe on the elephant is ⋍ 2.10$

I hope this helped! ☻

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3 years ago

What is the significance of mendel's experiments to the study of genetics?

goldfiish [28.3K]

Gregor Mendel, through his work on pea plants, discovered the fundamental laws of inheritance. He deduced that genes come in pairs and are inherited as distinct units, one from each parent. Mendel tracked the segregation of parental genes and their appearance in the offspring as dominant or recessive traits.

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