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JulsSmile [24]
3 years ago
12

All evolutionary changes that allow a species to change in response to the environment are originally a result of A) beneficial

DNA mutations. B) movement to new environments where survival is easier. C) cross-breeding with other species of closely related organisms. Eliminate D) adaptations that organisms make to the environment during their lifetimes.
Biology
2 answers:
pychu [463]3 years ago
8 0

The answer was actually A.) Beneficial DNA Mutations

Gemiola [76]3 years ago
7 0

Answer: D. adaptations that organisms make to the environment during their lifetimes.

Adaptation is a process in which changes occurs in an organism so as to make it better suited for the environment. It is the result of natural selection. In adaptation the traits of an organism gets modified by the process of natural selection which results in evolution of an organism.  

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Tan mice lived in regions with sandy hills. Over time, many of these tan mice migrated to a region with dark-colored hills. Even
AleksandrR [38]
The first, second, and fourth statements are correct.
3 0
3 years ago
How many grams of the compound in the figure above are required to make 1 liter of a 0.5 M solution? (Note: The atomic masses, i
Dafna1 [17]

Answer:

This question is incomplete as there is no figure in the question but the compound in the figure is Ethanoic acid (CH3COOH). Hence, we can calculate the mass.

The answer is: 30grams

Explanation:

According to the question, the volume of the compound (CH3COOH) is 1litre while the molar concentration is 0.5M

Molarity or Molar concentration is calculated using the formula:

M= n/V

Where; M= Molarity (M) = 0.5M

n= number of moles (mol)

V= Volume (V) = 1L

Hence, number of moles (n) = M × V

n = 0.5 × 1

n = 0.5 moles.

To calculate the mass in grams of CH3COOH, we say;

Number of moles (n) × molar mass (MM)

Since atomic mass for (C= 12, H= 1 and O=16)

Molar mass of CH3COOH:

= 12 + 1(3) + 12 + 16 + 16 + 1

Molar mass of CH3COOH = 60g/mol

Mass (in grams) of CH3COOH = 0.5 moles × 60g/mol

Mass = 30grams.

Therefore, 30grams of CH3COOH compound are required to make 1 liter of a 0.5 M solution.

6 0
3 years ago
20. Different kinds of cells in living things contain many of the same elements. What are the elements most
ICE Princess25 [194]

Answer:

I'm pretty sure that its A.

Explanation:

8 0
3 years ago
Explain how in an electrical system like wires going from a plant to a house, there is less electrical energy at the end of the
DiKsa [7]

Answer:

According to the law of conservation of energy, energy cannot be created or destroyed, although it can be changed from one form to another. KE + PE = constant. A simple example involves a stationary car at the top of a hill.

The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another. This means that a system always has the same amount of energy, unless it's added from the outside.  The only way to use energy is to transform energy from one form to another.

Similarly, the law of conservation of energy states that the amount of energy is neither created nor destroyed. ... For example, when you roll a toy car down a ramp and it hits a wall, the energy is transferred from kinetic energy to potential energy.

Explanation:

7 0
2 years ago
Why do you need a global perspective when planning for sustainable energy?
Greeley [361]
Energy is interrelated on Earth; people need to manage Earth's natural resources to meet current and future needs that effect the entire planet.

Hope that helped!
5 0
3 years ago
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