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GuDViN [60]
3 years ago
14

Select the correct text in the passage.

Biology
1 answer:
lisabon 2012 [21]3 years ago
4 0
numero dos second one
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What is natural selection
AlekseyPX

Natural selection is a central concept of evolution. Natural selection is the process where organisms with favorable traits are more likely to reproduce. In doing so, they pass on these traits to the next generation. Over this time this process allows organisms to adapt to their environment.

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Why do macromolecules differ in the amount of energy they contain?
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<span>The energy stored in each of these macromolecules varies because their chemical structures, and therefore their energy-storing bonds,differ.</span>
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Which of the following was an early realization that gave rise to Darwin's theory of natural selection?
neonofarm [45]
D. Darwin's theory of natural selection shows that organisms evolve based on which one's survive the best and thrive. 
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3 years ago
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properties of baking soda property observed observation color white texture fine crystals odor none mixed with water dissolves m
antiseptic1488 [7]

The right option is d) bubbles

The production of bubbles when baking soda mixes with an acid such as vinegar is the observation that indicated a chemical property of the baking soda.

Baking soda (also known as sodium bicarbonate) is a nonflammable, white crystalline powder. Baking soda is odorless, and alkaline. Baking soda reacts with vinegar (acetic acid) to produce carbon dioxide (a gas), water, sodium ion and acetate ion. Baking soda is used for many purposes such as; as an antacid for treating indigestion, for baking, in fire extinguishers, as a water softener, as a pesticide, and to remove dirts from materials.


8 0
3 years ago
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g If a colony of bacteria starts with 1 bacterium and doubles in number every 20 ​minutes, how many bacteria will the colony con
Lynna [10]

Answer: 2.81 x 10∧14 baterias after 16 hours.

Explanation:

Hi, first we have to find how many 20 minute intervals are in 16 hours.

If 1 hour = 60 min, 16hours = 960 minutes (16 h x 60 min / 1 h)

If we divide the 960 minutes (16 hours) by 20 minutes we obtain 48. (960/48)

There are 48 twenty minutes intervals in 16 hours.

Now we have to apply the exponential growth formula:

P (t) = Po (1 +r) ∧t

Where:  

P (t) = population at time t  

P (0) = initial population (1)

r = growth rate (1)

t = time (48)

Replacing with the values given:

P (t) = 1 (1 + 1) ∧48= 2.81 x 10∧14

2.81 x 10∧14 baterias after 16 hours.

7 0
3 years ago
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