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Scrat [10]
3 years ago
14

Changes in DNA that sometimes do and sometimes don't have a harmful effect are called what?

Biology
2 answers:
riadik2000 [5.3K]3 years ago
6 0

They are called mutations..... :)

aniked [119]3 years ago
4 0

Answer:

A harmful one would be cutting down trees to make a new mall, This is the exact opposite of the one above, less food for plant or leave eating animals and less oxeygen

Explanation:

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Que efectos tiene el chancro blando?
Setler [38]

Explanation:

Los síntomas del chancro incluyen una o más ulceras y dolor en los nódulos linfáticos, es decir en el área donde las piernas y el tronco del cuerpo se unen. La úlcera empieza como un granito doloroso que se llena de pus y luego se convierte en una llaga o úlcera.

8 0
3 years ago
If a nearsighted person has a far point df that is 3.50m from the eye, what is the focal length f1 of the contact lenses that th
miv72 [106K]

Answer:

-3.50 meter

Explanation:

A nearsighted person uses concave lens.

Given -

Far point i.e distance of object = - 3.5 meter

Distance of image is not given . Hence we will assume that the image can be formed at any distance. We will take "di" = infinity

As we know

\frac{1}{f} = \frac{1}{di} + \frac{1}{df} \\

Substituting the given values in above equation, we get -

\frac{1}{f} = \frac{1}{infinity} + \frac{1}{-3.50}\\ \frac{1}{f} = 0 + \frac{1}{-3.50}\\ f = -3.50

Hence, the focal length of the contact lens is equal to -3.50 meter

6 0
3 years ago
What river is the main source of the water in Lake Mead and where does that water come from?
Ugo [173]

Answer:

The river that is the main source of the water in Lake Mead is the Colorado River. The Colorado River is a river in the western United States. The river is about 1,450 miles long. The river starts in the Rocky Mountains of Colorado. The river then flows through Utah, Arizona, Nevada, and California.

Explanation:

5 0
2 years ago
What's the most significant factor that controls the development of soil?
rodikova [14]
The answer to your question is C,"Climate". (':
8 0
4 years ago
Read 2 more answers
Question 1(Multiple Choice Worth 3 points)
igomit [66]
The long period of time over a region is called climate
7 0
4 years ago
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