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sergeinik [125]
2 years ago
12

A scientist tries to mate the two similar-looking fruit flies Drosophila melanogaster and Drosophila simulans. But he finds that

they are unable to produce viable offspring.What kind of evolutionary barrier could this be?
Biology
1 answer:
wel2 years ago
6 0
The evolutionary barrier is Reproductive Isolation. This mechanism ensures that organisms of different species can not produce offspring. In some cases, such as Mules, the two organisms CAN produce offspring, but the offspring will not be fertile. 
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What is a income variable in science terms plz answer I need it by midnight today
vichka [17]
Income is how much money u make
6 0
2 years ago
5. Compare the energy emitted by waves with long <br> wavelengths to waves with short wavelengths
irinina [24]

Explanation:

The energy emitted by long wavelength waves are smaller to those emitted by short wave lengths.

The energy of a wave is a function of its wavelength and frequency.

  • The wavelength of a wave is the distance between its crest.
  • Frequency is the amount of waves that passes through a point in a period of time.
  • Energy of a wave is directly proportional to frequency and inversely proportional to wavelength.
  • The higher the frequency of a wave, the more the energy.
  • Waves with a high wavelength carries very little energy.
  • Long wavelength radiations have a long wavelength as the name implies. They carry very little energy and have low frequency. Examples are infra-red.
  • Short wavelength radiations have short wavelength. They carry very high amount of energy and have very high frequency. Examples are x-rays and gamma rays.

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3 0
2 years ago
What would be a limiting factor in an ecosystem?
Feliz [49]
D. population and nutrients


4 0
3 years ago
Read 2 more answers
What is the manipulated variable in this experiment?
jasenka [17]

The correct answer is C. The temperature of the water

Explanation:

In an experiment such as the one described about the speed of snails in water, the manipulated variable is the factor or element that is manipulated on purpose. This means the researcher or researchers slightly change this element to compare how this affects another variable. In this context, the manipulated variable is the temperature of the water because researchers used three different temperatures (cool, room-temperature, and warm), and therefore they manipulated or changed this factor. Moreover, it is expected temperature affects the distance nails move, which is the main variable.

7 0
2 years ago
Enter your answer in the provided box. what is the value of ni for an electron that emits a photon of wavelength 95.04 nm when i
Sloan [31]
<span>Ni = 5 The Rydberg formula for hydrogen is 1/w = R(1/a^2 - 1/b^2) where w = wavelength in vacuum R = Rydberg constant 1.0973731568508x10^7 1/m a,b = integers greater than or equal to 1 and a < b Now we need to select the value for a. a = 1 will converge towards 91.13 nm a = 2 converges towards 364.51 nm a = 3 converges towards 820.14 nm ... Because of this, we will assume a = 1 for this problem since it converges closest to the wavelength given. Substitute known values 1/w = R(1/a^2 - 1/b^2) 1/9.504x10^-8 = 1.0973731568508x10^7(1/1^2 - 1/b^2) 10521885.52 = 1.0973731568508x10^7(1/1 - 1/b^2) 0.958824759 = 1 - 1/b^2 -0.041175241 = -1/b^2 0.041175241 = 1/b^2 24.28643927 = b^2 4.928127359 = b So Ni = 5.</span>
3 0
3 years ago
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