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Alla [95]
3 years ago
7

What once was an open pasture on a long abandoned farm has changed over time, without the direct influence of humans. after the

cattle had been removed, shrubs and bushes could be seen dotting the grass-covered hillsides. a few years later, small pine trees and then larger deciduous trees appeared. now, there are so many trees and shaded regions it is difficult to tell that this was once a field?
Biology
1 answer:
Komok [63]3 years ago
8 0

The mentioned case represents secondary succession.  

Secondary succession is one of the two kinds of ecological succession of plant life. Secondary succession refers to a procedure initiated by an incident, like harvesting, forest fire, hurricane, and others, which minimizes an already settled ecosystem to a lesser population of species.  

Thus, it can be said that the secondary succession takes place in preexisting soil on the other hand primary succession takes place in a place devoid of soil.  

Secondary succession is the ecological succession, which takes place after the initial succession has been disrupted and certain plant and animal species do prevail. It is usually faster in comparison to primary succession.  


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when algae lives on a slth it is consirered a mutual symbiotic relationship. why is this an exampkle of mutualism
d1i1m1o1n [39]

Algae living on a sloth is considered an example of mutualism because both of them benefit from each other.

Mutualism is one of the symbiotic relationships in which both the two species living together benefit in one way or another. A considerable example of such a relationship is between algae and a sloth.

The algae provide camouflage to the sloth and protect it from predators while the sloth provides shelter to the algae for its growth. The sloth also gets nutrition from algae which perform photosynthesis and synthesize food.

Another mutual relationship is observed between the aphids and ants. Aphids produce honeydew as a waste product of their diet which is consumed by ants. While ants protect the aphids from predators and parasites.

To know more about mutualism, refer to the following link:

brainly.com/question/94753

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At the doctor's office a device is placed on Dawn's stomach and she can hear her unborn child's heartbeat at five weeks gestatio
Murrr4er [49]
The fifth week of pregnancy is considered part of the embryonic stage of prenatal development.

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The embryo's cells begin forming specialized functions in a process called differentiation. The baby's heart, spinal cord, and brain begin to develop, so as his/her blood cells, kidney cells, and nerve cells. His/her external physical features also begin to form. 

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Humans have cut and frayed the woven tapestry of Earth’s biodiversity. List and describe three ways.
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WILL GIVE BRAINLIEST!!
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