All categories

4 years ago

Classify the type of erosion that could move sand along a shoreline

Biology

1 answer:

natka813 [3]4 years ago

3 0

Answer:

Erosion and deposition (shoreline retreat)

Explanation:

Sand moves along a shoreline through hydraulic and mechanical action (friction) of the waves. During this course, two phenomenons usually occur, i.e. erosion followed by deposition.

However, sometimes when the wave action is stronger, it leads to the coastal erosion or the shoreline retreat where a land part is permanently lost and the sand is moved with the waves forming beaches.

You might be interested in

Which best describes how DNA is used as a molecular clock? (2 points)

PilotLPTM [1.2K]

I think the correct answer from the choices listed above is the third option. The DNA is used as a molecular clock in the sense that the <span>percent of carbon in DNA is compared between parent and offspring. Hope this answers the question. Have a nice day.</span>

3 0

4 years ago

Read 2 more answers

1. Describe the similarities and differences between the cheek cell wet mount and dental plaque wet mount.

Semenov [28]

Answer:

Cells from the cheek are a type of epithelial cell, similar to skin. ... They can be seen faintly even at 40x (scanning power), but the most dramatic images are at 400x where the nucleus is clearly visible as a dark spot in the center of the cell.

Explanation:

5 0

3 years ago

If an organism eats other organisms to get the energy it needs to survive, it is a ?

ivanzaharov [21]

I believe the answer is predator but I could be wrong

7 0

4 years ago

Read 2 more answers

A 20-pound object is dropped from a 50-foot bridge onto the ground below it. A 50-pound object is dropped from a 100-foot cliff

ira [324]

The 50 pound object will reach the ground first.

Explanation:

Using the second equation of motion, we can derive the time taken for each of the object to reach the ground. As the object is thrown from the top of the bridge or cliff, acceleration due to gravity will be acting on them.

So, $s = ut+\frac{1}{2} at^{2}$

The value of s for the object thrown from 50 foot bridge is given as 50 ft. The initial velocity of the object will be zero. The acceleration can be written as the ratio of mass to gravitational force.

Then, $s = (0) t +\frac{1}{2}*\frac{m}{F}*t^{2}$

$50 = \frac{20}{2F} t^{2} \\\\t^{2} = \frac{100F}{20}$

$t = \sqrt{5F}$

Then, consider the time taken for the 50 pound object to reach the bottom of 100 ft cliff as t₁ and the displacement in this case is 100 ft.

Then, $100 = (0)t +\frac{1}{2}*\frac{50}{F}*t_{1}^{2} \\\\t_{1}^{2} =\frac{200F}{50}$

$t_{1} = 2 \sqrt{F}$

Since, the gravitational force acting on both the objects will be same, the ratio of time taken is

$\frac{t }{t_{1} }=\frac{\sqrt{5F} }{2\sqrt{F}} = \frac{\sqrt{5} }{2}$

So, the time taken for the 20 pound object to reach the ground of 50 ft bridge is √5 s =2.236 s and the time taken for the 50 pound object to reach the ground of 100 ft cliff is 2 s.

Thus, the 50 pound object will reach the ground first.

5 0

3 years ago

Many countries, including the United States, measure output by calculating the _____.

muminat

These countries, together with the United States of America measure output through the calculation of complex indexes and metrices which, when taken together, are known as the Gross Domestic Product (GDP).

Both the economic peaks and cycles refer to other things, which are mildly related to the gross domestic product.

5 0

3 years ago

Read 2 more answers