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LenKa [72]
2 years ago
14

How does natural selection result in adaptations in a species?

Physics
1 answer:
egoroff_w [7]2 years ago
5 0
This is because successful characteristics survive and reproduce. 
Adaptation is both an evolutionary process and a result of natural selection, it is the process of evolution in which traits are modified by natural selection. It is a phenotypic trait that is moulded by natural selection such that organisms with successful characteristics survive and reproduce. 
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An empty jar is pushed open-side down into water so that trapped air cannot escape. As it is pushed deeper, the buoyant force on
Pavlova-9 [17]

As it is pushed deeper, the buoyant force on the jar will decrease. The correct option is B

<h3>What is buoyant force ?</h3>

The upward force applied to an object that is fully or partially submerged in a fluid is known as the buoyant force. Upthrust is another name for this upward thrust. A body submerged partially or completely in a fluid appears to shed weight, or to be lighter, due to the buoyant force.

The fluid under which an object is submerged exerts pressure, which is what generates the buoyancy force. Because a fluid's pressure rises with depth, the buoyancy force is always upward.

To know more about buoyant force you may visit the link:

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3 0
1 year ago
which of the following small bodies are the hardest to tell apart because they are made of similar materials ? A . dwarf planets
grandymaker [24]
Option D is right that is asteroids and meteroids.
8 0
3 years ago
Read 2 more answers
In any electromagnetic wave,
KATRIN_1 [288]
C.half the energy is carried by the electric field and half is carried by the magnetic field.
3 0
2 years ago
Plain electromagnetic wave (in air) has a frequency of 1 MHz and its B-field amplitude is 9 nT a. What is the wavelength in air?
Norma-Jean [14]

Answer:

Part a)

\lambda = 300 m

Part b)

E = 2.7 N/C

Part c)

I = 9.68 \times 10^{-3} W/m^2

P = 3.22 \times 10^{-11} N/m^2

Explanation:

Part a)

As we know that frequency = 1 MHz

speed of electromagnetic wave is same as speed of light

So the wavelength is given as

\lambda = \frac{c}{f}

\lambda = \frac{3\times 10^8}{1\times 10^6}

\lambda = 300 m

Part b)

As we know the relation between electric field and magnetic field

E = Bc

E = (9 \times 10^{-9})(3\times 10^8)

E = 2.7 N/C

Part c)

Intensity of wave is given as

I = \frac{1}{2}\epsilon_0E^2c

I = \frac{1}{2}(8.85 \times 10^{-12})(2.7)^2(3\times 10^8)

I = 9.68 \times 10^{-3} W/m^2

Pressure is defined as ratio of intensity and speed

P = \frac{I}{c} = \frac{9.68\times 10^{-3}}{3\times 10^8}

P = 3.22 \times 10^{-11} N/m^2

6 0
3 years ago
What kind of air mass comes from the Gulf of Mexico? A. continental tropical B. continental polar C. maritime tropical D. mariti
Yakvenalex [24]
A. Hope this helps! (:
8 0
3 years ago
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