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zheka24 [161]
3 years ago
15

Some of the earliest research on was conducted by Robert T. Paine, who actually coined the term keystone species. For over 25 ye

ars Paine and his students removed , a sea star, from tidal pools on the coast of Washington. Throughout his research, Paine discovered that removal of this predator resulted in A) another predator moving in to replace the sea stars. B) a change in trophic levels, with only producers and herbivores present. C) mussels becoming the dominant species and crowding out all competitors. D) a shift in the ecosystem and a new keystone species becoming established.
Geography
1 answer:
fenix001 [56]3 years ago
4 0

Answer:

The answer is C)

Explanation:

The predators were unable to keep the population of the mussels down. The mussels took more area of the rock. Other species that needed space did not return to the tidal pool. Otters can also be keystone species as they eat urchins. By doing so, they prevent the sea urchins form eating all the kelp plants and removing the entire habitat for many other species. The Keystone Species theory shows that this impact of few predators, that made up a minor amount of the total species, could have such a high impact on the ecosystem.

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Explanation:

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24. Palm trees and subtropical plants are commonplace in Land's End, England, whose latitude is the equivalent of Labrador in co
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Answer:

B) Regions such as Labrador are actually colder than England because colder Arctic water flows down to eastern North America and warm water from the equator flows to England

Explanation:

Even though Labrador and England are roughly on the same latitude, the climates in these two places are very different. The reason for this is the influence of the ocean currents on the climate. Labrador is influenced by dry and cold ocean currents, bringing in very cold weather conditions and harsh cold winds, thus not providing conditions for the growth of palm trees. On the other side of the Atlantic, England is influenced by warm and wet ocean current, the Gulf Stream. This brings in relatively small fluctuations in the temperature, with both the summer and the winter being mild and without extreme temperatures. Also, it brings in a lot of precipitation, so the palm trees manage to survive with only slight adaptations.

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The Guayas River flows through the largest city in Ecuador, which is?
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Explanation:

The first step would be that the rock would be in liquid form, 2nd stage would be the sludge stage, which would contain both solids and liquids, then overtime, the sedimentary rock would form. The Sedimentary rock can also be made out of mud and sand that has been under countless pressure overtime. But you would be most able to find one near deserts, lakes, seas, and rivers. So bodies of water would give you the advantage to find this rock.

6 0
3 years ago
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Anastasy [175]

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6 0
3 years ago
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