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Deffense [45]
3 years ago
7

3. What is natural selection?

Chemistry
2 answers:
Alex17521 [72]3 years ago
8 0

Answer:

Explanation:Natural Selection is where animals move to a new enviornment and the ones that can survive mate and those that survive will mate.

e-lub [12.9K]3 years ago
5 0
A natural selection is a main process that brings about evolution. it’s like a life circle. Explain, tree frogs are eaten by like snakes or birds
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This is a graded Quiz and I need all of the answers to be right but I am not sure so I need help this is a 3.08 science Quiz and
Setler79 [48]

Answer:

1 true

Explanation:

bcz it is true

8 0
3 years ago
6 NH4Cl<br> How many hydrogen atoms are shown?
kvasek [131]

Answer:

24

Explanation:

6*4=24

4 0
3 years ago
Almost done somebody please help me
s344n2d4d5 [400]

The correct answer is A. It is uniform in composition and the parts that make up the mixture can be separated from one another through physical means.

Explanation:

In a homogeneous mixture, components are completely integrated, which means the final substance is uniform and the parts that compose it are not separated. This occurs in milk because this integrates uniformly water, fat, among others, and these elements cannot be observed separately.

Moreover, in mixtures, components can be separated through physical means; for example by heating the substances. This applies to milk because if it is heated water evaporates, and therefore can be separated.

6 0
4 years ago
How much would the freezing point of water decrease if 4 mol of sugar were added to 1kg of water?
andreyandreev [35.5K]

Answer:

7.44 C is the answer of the question.

Explanation:

8 0
3 years ago
An aluminum cup of 140 cm3 capacity is completely filled with glycerin at 20°C. How much glycerin will spill out of the cup if t
mel-nik [20]

Explanation:

The given data is as follows.

    coefficient of volume expansion of glycerin (\beta) = 5.1 \times 10^{-4} 1/^{o}C

     linear expansion coefficient of aluminum, (\alpha_{A}) = 23 \times 10^{-6} 1/^{o}C  

              Volume = 100 cm^{3}

The increase in volume of the cup will be calculated as follows.

                    \Delta V_{c} = V \times 3 \times \alpha \times \Delta T

                                 = 100 cm^{3} \times 3 \times 23 \times 10^{-6} \times (31 - 20)^{o}C

                                 = 75900 \times 10^{-6} cm^{3}

                                 = 0.0759 cm^{3}

Formula for increase in volume  of glycerine is as follows.

               \Delta V_{g} = V \times \beta_{g} \times \Delta T

                              = 100 cm^{3} \times 5.1 \times 10^{-4} 1/^{o}C \times (31 - 20)^{o}C

                              = 0.5610 cm^{3}

Therefore, volume of glycerin spilled is calculated as follows.

                        \Delta V = \Delta V_{g} - \Delta V_{c}

                                     = (0.5610 - 0.0759) cm^{3}

                                     = 0.4851 cm^{3}

Thus, we can conclude that 0.4851 cm^{3} glycerin will spill out of the cup.

6 0
3 years ago
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