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Luba_88 [7]
3 years ago
6

What does the phylogenetic tree show

Biology
1 answer:
ipn [44]3 years ago
8 0

A phylogenetic tree or evolutionary tree is a branching diagram or "tree" showing the evolutionary relationships among various biological species or other entities—their phylogeny—based upon similarities and differences in their physical or genetic characteristics.

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Janet installed a dimmer on the lights in her bedroom. She slid the dimmer switch, causing the resistance in the circuit to
Anton [14]

Answer: The correct answers are option(b) and(d).

Explanation:

When the lamp was dimmer  the resistance offered by the lamp was more which just resist the flow current from the circuit.

V=RI (Ohm's Law)

When the Janet decrease the resistance to (R') by sliding the dimmer switch (voltage remained constant). On decreasing the resistance the flow of current in circuit will increase by which light of the lamp will become brighter.

Hence, from the enlisted options the correct options option(b) and(d).

4 0
3 years ago
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Evolutionary theory contends that genetic ___________ is necessary and beneficial for humanity when there is an environmental ch
Anni [7]

Answer:

variation

Explanation:

Genetic variation is what makes us all unique as a result of subtle changes in our DNA.  The Theory of Evolution is a process in which organisms change over time as a result of adapting to their environment.  Charles Darwin came up with the term Survival of the fittest, in any environment plants and animals from the same species show natural variation in their physical characteristics, like neck lengths in giraffes.  Darwin suggested that the plants and animals best suited to the environment will survive and pass on their characteristics to their offspring. Over time, the characteristics of the surviving members of the species will become predominant.

Example: Peppered moth

In London in the 1800's, 98% of peppered moths had light colored bodies and only 2% were dark.  The light moths were the same color as the trees so they could easily hide from hungry birds and not get eaten.  The dark moths however were easy to see and were eaten.  Then came the factories and smoke of the industrial evolution and many trees turned black with soot and suddenly the dark moths were able to survive better as they now looked like the trees and the light colored moths were easier to spot and eat.  By 1895 the dark peppered moths made up 95% of the population and the light colored moths only 5%.  This is an example of natural selection, because of the gene that makes the moths dark, it allowed them to flourish when the environment changed, they adapted, reproduced and survived.

8 0
2 years ago
:)))))))))))))))?:))))))))?
frozen [14]

Answer:

that so cute

Explanation:

7 0
3 years ago
The _____ region of the left lower limb is proximal to the _____ region of the same limb
AlexFokin [52]
Answer: <span>femoral; crural

In referring location/region you can use proximal or distal. Proximal means closer to the body. It's the opposite of distal that would mean further to the body
Femoral (or thigh) is located nearer to the body than crural (or leg).</span>
5 0
3 years ago
Acid rain is a secondary pollutant. Please select the best answer from the choices provided T F
olchik [2.2K]
The answer is T, True. Secondary pollutants are pollutants that we do not directly release, but that are created as a side effect of releasing primary pollutants, such as carbon dioxide, sulfur oxides, and particles such as ash and dust. Secondary pollutants include acid rain, ozone, smog, and CFC's (chlorofluorocarbons).
5 0
3 years ago
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