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trasher [3.6K]
3 years ago
13

Why do populations of organisms fluctuate?

Biology
1 answer:
lianna [129]3 years ago
8 0
As the world evolves, there is a change in the ecosystem, and with that comes the fluctuation. Organisms have have changing populations as they adapt, slowly die out, or thrive in the new ecosystem.
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what is the difference of a structure and function of the cell wall to the structure and function of the cell membrane?
Afina-wow [57]

One of the differences between the cell membrane and the cell wall is in the type of organisms that they are found in. A cell wall is found in plants only. A cell membrane is found in all organisms including plants. Present only in plants, and in some fungi, bacteria, algae.

7 0
3 years ago
What did Rosalind Franklin contribute to the understanding of DNA molecules?
RoseWind [281]

Answer:

The correct answer is A) An image indicating the shape of a DNA molecule. See the explanation below, please

Explanation:

Rosalind Franklin through studies of X-ray diffraction and crystallography, showed the double helix structure of the DNA molecule.

5 0
3 years ago
How energy given off by the sun varies over time?
agasfer [191]

Answer:

Over the course of one solar cycle, the Sun's emitted energy varies on average at about 0.1 percent. That may not sound like a lot, but the Sun emits a large amount of energy – 1,361 watts per square meter. Even fluctuations at just a tenth of a percent can affect Earth

Explanation:

b

7 0
2 years ago
A roofer needs to get a stack of shingles onto a roof. Pulling the shingles up manually uses 1,549 n of force. The roofer decide
AURORKA [14]

Answer:

3.47

Explanation:

Mechanical advantage is given by the ratio of output force by input force.

F_o = Output force = 1549\ \text{N}

F_i = Input force = 446\ \text{N}

So,

MA=\dfrac{F_o}{F_i}\\\Rightarrow MA=\dfrac{1549}{446}\\\Rightarrow MA=3.47

The mechanical advantage of the pulley's is 3.47.

5 0
2 years ago
How do abiotic factors affect organisms in an ecosystem?
ddd [48]
A lot of abiotic factors are necessary to the ecosystem, such as temperature, water, sunlight ect. ect.
Without these factors, certain animal species would not be able to prosper, and once adapted living organisms, would fail to get needed resources.
There can also be a negative affect.
Abiotic factors directly affect how organisms grow and survive. 
Hope it helps :) 
6 0
3 years ago
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